As we at THEGDFC try to cater for your tutorial needs on a request basis sometime its good to find inspiration when you are lost for a topic to try your hand at fun tasks in photoshop.
we have scoured the web and have brought you a list of of Fun and educational tutorials from around the web universe to push your skills and relieve that lunch time boredom.

1. Creating a Stunning Old-World Look in Photoshop

Site: PSDTUTS
Link: http://psdtuts.com/designing-tutorials/creating-a-stunning-old-world-look-in-photoshop/

Notes from site:
In this tutorial we are going to create a sort of oldy-worldy composition featuring a compass and making use of some awesome vector artwork from Arsenal. As always there is a PSD file at the bottom of the tutorial, in this instance I would highly recommend downloading it as this is quite a complex composition. Be warned this is a LONG tutorial!

2. Making of an Abstract Art Piece: “Lonium”

site: photoshopstar
Link: http://www.photoshopstar.com/effects/making-of-abstract-art-piece/

Notes from site:
In this Photoshop tutorial we’ll be walking through the process of making an abstract artwork, using abstract 3D renders, textures, and more.

3. Photo shop cheats & tricks

Site: how to cheat in photo shop
Link: http://www.howtocheatinphotoshop.com/samples.html

Notes from THEGDFC: This site is a personal favorite of mine and a section we will be reviewing more in the future, the book that can be bought is a powerful tool to all who want to really get to know photoshop and its features in full. The book comes complete with a CD which includes all the elements and files required to complete the tutorials held within the book in a very easy manor.
I have completed the book and have found the tricks held invaluable to my skills as a designer.

Notes from site:
Big on creative inspiration but short on time? Crunching deadlines again and can’t quite figure out how to get your ideas out of your head and on to the screen? How to Cheat in Photoshop comes to your rescue once again. Nobody knows more about working fast under pressure and pushing the envelope to craft creative images that capture imaginations than hands-on graphic artist, working illustrator and master of magic, Steve Caplin.

With his in-depth knowledge of the little-known secrets used by the pros to produce award-winning illustrations, Steve is THE go-to guru for professional designers, graphic artists, illustrators, retouchers, and students of design media and illustration who want to create photorealistic effects using Photoshop.

Updated for Photoshop CS3, this must-have resource unlocks your creativity and helps you save time in the software so you can spend more time creatively. The book is also relevant to any version of Photoshop.

4. Peeling Sticker Effect

site: photoshop lab
Link: http://www.photoshoplab.com/peeled-sticker-style-effect.html

Notes from site:
As a child, there are few things more fun than sticking stickers on things. Everything(s). Here’s how to easily create a peeled sticker effect.

5. Photoshop Keyboard Shortcuts for Productivity

site: photoshop lab
Link: http://www.photoshoplab.com/top-7-photoshop-keyboard-shortcuts-for-productivity.html

Notes from THEGDFC: Whilst this may not be a fun tutorial the link provided here is to a page contains a host of keyboard shortcuts to speed your productivity and make you operate photoshop like a pro.

Notes from site:
This is a list of my top 7 (or so) favorite and most used Photoshop keyboard shortcuts. Some might be obvious to you, some you might already know, and some might be new to you. Feel free to add your own below. There’s nothing more damaging to your productivity than having to wrestle with the program you are using to get it to do what you want. Searching for tools or buttons is a task that can easily be bypassed with some quick memorization of shortcuts.

If you dont have photoshop and would like to try any of the tutorials above then you can download a time limited demo copy from ADOBE

Link: http://www.adobe.com/downloads/