@oldturkeyo3 Um, you got it wrong, mate, no offence. :) iPod Touch 4 sure has the Retina Display as the iPhone 4 has, but not the same IPS technology, but the TN which does NOT provide a wide viewing angle. Like, eg, take a picture of something dull black, and then view it from an angle: you'll notice the display goes bluish. But do the same for an iPhone 4, and you'll notice the difference.
Like @Evan said, try the combination as she suggested; this will 99% work cos that's the combination known as reset or simple restart by Apple. That will definitely save you a visit from Apple. One more choice is that if you connect it to your computer and then press the combination. After that, open iTunes and see if your device is listed. If yes, then click on it. If it says that it has detected an iPod touch in recovery mode, then it means something crashed or stopped your iTouch from working and that's why it went to recovery mode.
Well, the simplest way is that you go to the Videos app, then slide to the left on the video you want to delete (same works with Mail, and few other apps like iBooks) and a delete button (red colored) slides in to the right. You click the button, and your video gets deleted. Then in future, if you don't want to sync that video again, 1> Delete from your iTunes library OR 2> Uncheck 'Sync all videos' under the Videos tab in iTunes. Then it will not sync the video further, and you are left in peace to sync the desired videos.
In simple words, you can just simply locate to the folder where your ipsw file is saved (this is the file that iTunes downloads as an update for the device.) So when you open iTunes 10.5 (Cos that's the version you need for iOS 5 to get detected), just click on your iPod listed on the left, then in the Summary tab, click Shift + Restore and locate to the folder where your ipsw file is saved (Google is your friend, remember?) and then it restores your iTouch. :)