If you are tired of the Batman Light-Up T-Shirt that we covered here at GeekAlerts last year, here is something new to light up the day for you and the people around you.

This cool light-up t-shirt features four different emoticons that you can choose to illuminate depending on your mood or the message you wish to convey.

You can show a happy face, a sad face, a winking face or a surprised face, depending on how you feel. A glow in the dark/UV reactive screen print completes the effect.

The Illuminated Emoticon T-Shirt requires 4xAAA batteries. The product goes on sale on the 20th of November 2009 with a recommended retail price of £29.99 (about $48).

In July the the caped crusader will return in the movie The Dark Knight, and you will be able to add a little light to the darkness using Thumbs Up’s new and officially licensed Batman light-up t-shirt.

These high-quality shirts are made from 100% cotton and contain a small battery pack that powers the flexible panel on the front of the shirt to give amazing effects, ranging from a gentle glow to a pulsing strobe.

Features:

• Officially licensed Batman movie merchandise
• Extra bright light-up shirts
• Look excellent both day and night
• Various flashing sequences
• 100% cotton shirt
• Small, lightweight battery pack requires 2 x AAA batteries
• Available in both children’s and adult sizes

The Thumbs Up website has the Batman Light-Up T-Shirt listed with a suggested retail price of £19.99 (about $39 USD).

The T-sketch t-shirt allows you to display a personalized message in a fun and cool way – whatever you write or draw on the chest display will be converted into an illuminated message or design.

Anything that’s drawn on the wipe-clean panel activates a glowing light beneath so that it lights up. You can also change the flashing sequence to suit your preference – from a gentle glow right through to a pulsing strobe.

The T-Sketch is available in both adult and kids’ sizes. You can pre-order the product from Gadgets.co.uk for £29.99 (about $60 USD).

“Mushroom Dealer” is the name of a new series of cool geeky Super Mario Bros. 2 inspired items designed by Alexandre Deviers.

Choose between a T-Shirt ($20.95), a Hoodie ($40.95) and a Tote Bag ($14.95) – all available in a wide range of colors and sizes.

Check out the Mushroom Dealer line over at NoiseBot.com.

If you remember those Star Wars Costume T-shirts we covered last month, you might also remember that a certain furry friend was missing.

Fear not, the Chewbacca Costume T-shirt by Junk Food ($30) is here.

This Star Wars t-shirt will turn you into a wookie in a flash. Is it you or Chewbacca? No one will know! The brown tee is composed of Junk Food’s super soft 50% cotton / 50% polyester blend.

Did you enjoy the Han (Guitar) Solo t-shirt posted last week? Here’s your chance to get something similar with the arch-villain behind the guitar.

Dark Side front man Darth Vader takes center stage in this cool CHUNK tee available in, well, black of course. May the reverb be with you.

Back print (Dark Side Productions presents “Vader the Intergalactic Tour”):

The Metal Vader Adult T-shirt is available at StarWars.com for $29.99.

This awesome Star Wars inspired Guitar Solo ($18) t-shirt is designed by Tom Burns and available at the Go Ape Shirts website.

Screen printed on a black American Apparel tee. Choose between sizes from Small to 2X Large, and models for both him and her.

(Via Mike Ballan)

Something for those Star Wars fans how wants to show their love for Lucas’s epic space saga, but are still not ready for the full costume.

You can now slip into one of these Star Wars Costume T-shirts, as a first small step towards the day when you step into a full bodysuit.

• Darth Vader Costume T-shirt ($28)
• R2-D2 Costume T-shirt ($28)
• Stormtrooper Costume T-shirt ($30)

Available in sizes: Small, Medium, Large, XL.