Display Options
A large screen display, in my opinion, is not the ideal solution for surfing. Now, for watching pics, yes, that makes sense. The reason I say this is because if you want to sit at a sufficient distance from the display (say, a 42-inch in my case), you will have your resolution set such that you are not getting really any additional desktop than you would get in your 17-inch PB. But, if you want to make a presentation (e.g, displaying graphics) or make a slideshow as you suggest, yes, it is wonderful. I use my 42 for FCP and that I really like. Of course, make sure you have the screen saver running every now and then for a couple of minutes.
You can go a couple of routes -- DVI, VGA/RGB (monitors also designed for computer usage typically have one and in the front too), or S-Video. On a few models that do clearly state that the DVI is not intended for computers, I have gone ahead and plugged my PB all the same (for a short duration) and had acceptable results. If you have a DVI-HDMI converter, your options expand even with the newer monitors.
Between, DLP and Plasma or LCD, I prefer Plasma (first) and then LCD. May be it is just me, I have had unacceptable results with DLP. Fonts appear a bit smudgy and so do some curves on faces. Besides, if you want to work quietly with your display, the DLP fan noise is a factor too. Can get annoying, if you are a obsessed with a quiet setting as I am.
In terms of compatibility, I have so far not come across a display intended for a TV that was not plug-and-play with my PB.