Doctor Who will soon be celebrating its 50th anniversary with a special episode called The Day of the Doctor, which will feature the return of David Tennant and Billie Piper as well as current stars Matt Smith and Jenna Coleman. From there, it won't be long before we get to meet Peter Capaldi, the newest incarnation of everyone's favourite time lord.

Meanwhile, that deal with Disney has breathed new life into the Star Wars franchise - a new movie is due out in 2015, and original cast members like Mark Hamill (Luke Skywalker), Carrie Fisher (Princess Leia) and Harrison Ford (Han Solo) are rumoured to be coming along for the ride.

In short, it's an exciting time to be a sci-fi fan! If you're a dedicated Whovian and/or a would-be Jedi, we've got three great deals on today that we're pretty sure you'll enjoy. Here's what you need to know:

THE DEALS!

• Doctor Who fans can keep their valuables away from thieving hands with our awesome Tardis SmartSafe [no longer available]. When you reach the checkout, enter the discount code BIGGERONTHEINSIDE to get 50% off!
  
  
• This Star Wars Alarm Clock [no longer available] costs £19.99, but you can get it for just £10 when you enter USETHEFORCE as a discount code at the checkout.
  
  
• And then we have this R2 D2 SmartSafe [no longer available] - usually £29.99, but you can get it for half price using the discount code ARTOODETOO.

These deals END AT MIDNIGHT TONIGHT, so don't waste any time! Any of these three items would make great a Christmas present for your nerdy friend or family member - remember to use the discount code if you want the 50% discount!

What's that? You want more geeky, gadgety goodness? Okay then, how about this:

Buy any of our Star Wars iPhone Cases and get a colourful Flat USB Cable absolutely free!

You won't see the USB cable in your basket when you check out, but don't worry - we'll add it to your order automatically (the colour will be randomly chosen). iPhone cases are only £3 each to begin with, so what have you got to lose?

Click here for even more awesome Star Wars gifts and gadgets.

We're selling Star Wars iPhone 4 cases for a quid, that's all - one pound! We like to think we offer you a wide selection of well-priced gadgets, but this offer really is out of this world!

This is the bit where we talk briefly about Star Wars and phone cases: we know that most of you gadget lovers will also be massive Star Wars fans, and we're with you on that one! As such, we're not going to insult your extra-terrestrial intelligence by explaining who R2-D2, Darth Vader, and a stormtrooper is. What we can tell you is that you can have their iconic effigies emblazoned on your iPhone 4 for just a pound!

What can you buy with a pound these days (we say sounding a little like a war-veteran)? We know it is not much! You cannot even buy two small Mars bars for £1; so why not save your money, stretch your imagination, and get something from deeper into space still - these awesome Star Wars iPhone 4 cases!

The iConheli RC Helicopter is a remote control toy for the 21st century. Forget about clunky handsets and fiddly little thumbsticks; this particular RC helicopter is controlled using your iPhone, iPad or iPod Touch. Pretty nifty, eh?

And the best news is the price. The iConheli usually costs £49.99, but we at Gadget Inspector love a bargain and so we're currently letting the copters go for just £22.99.  That's a saving of £27 - less than half price!

All you have to do is add this radical remote control chopper to your basket, head to the checkout, and enter the following code:

GI-Twitter-220413

This will bump your copter's price down to a lean £22.99. This offer won't last long, so make sure you take advantage of it today - you won't find a cheaper chopper anywhere else!

Gadget Alert! This week and this week only there's a flippin' good deal on the website. It's the kind of thing you'd love to have on your desk and fiddle with absent mindedly, whilst plugging away at those spreadsheets. It's a real corker and a real classic too!

We are of course talking about the Newton's Cradle.  If you don't know for-how it works, let us enlighten you. The cradle as seen below is a simple and elegant metal frame, with 5 metal balls dangling from an almost invisible line (Just have a look, you'll get it that way).

'But what does it do?' We hear you scream at the screen. Well, it's all to do with a man who lived a while ago. His name was Mr Isaac Newton. We're sure you're familiar with his laws of motion, but we'll break it down further.

The 3rd law applies here (bear with us!). It states that every action has an equal and opposite reaction... so in simple terms, for everything that happens, something happens the other way!

The Newton's cradle is the massively addictive example of this. Simply pull back one of the clackers and release. It'll hurtle towards it's neighbour and impact. The force will travel through alllllllll the balls and come out at the opposite end, in the form of the last ball flying outwards. A seesaw motion if you like! It'll click and clack back and fore, whilst the 3 balls in the middle sit perfectly still.

If you pull back 2 balls? you guessed it. 2 will go flying at the other end, whilst the middle balls hangs like a lonely statue. 3 balls? The middle ball will go either way. Every action has an equal or opposite reaction.

You will not find a simpler or more elegant gadget for you desktop than Isaac Newton's Balls. For such a crazy low price you can sit these in front of the monitor and start clackering away. We can't guarantee that you won't want to stop it by putting your fingers in between! They're reduced from an already low £6.95 to an even more astounding £2.90!

Of course if you wanted to youtube this super gadget to check out how it works, we've saved you the trouble. Have a look at this! Of course ours is smaller but probably a lot less dangerous....

Huge discounts and fantastic gadget offers throughout the month!

Ready for an exciting announcement? We hope so, because our January Gadget Sale is now open! January's a pretty miserable month, what with the winter weather and the sudden absence of Christmas cheer, so here's hoping that a bucketload of fantastic gadget offers will make the next 31 days or so a little easier to bear!

We've reduced the prices of over 200 items for our big gadget sale - you might well be surprised at how much cash these great gadget offers can save you! Here's a small smattering of the awesome gadgets you could get for next to nothing:

• The Glow In The Dark Beer Pong Table is usually £149.99, but for the duration of the January Gadget Sale, it's yours for a mere £105.99. That's a saving of £44!
  
  
• The super-cool Combat Creatures Attacknid [no longer available] has an RRP of £69.99 but, in the name of gadget offers, we're currently letting it go for just £37.99!
  
  
• This Remote Control Spy Helicopter is down from £59.99 to just £35.99, saving you a cool £24. Fly around and spy on your friends and family!

That's just the tip of gadget sale iceberg. There are plenty more great gadget offers where they came from, so have a browse through and see what you could save on gadgets this January!