Your best bet is to get the biggest computer monitor that you can. There are a bunch of reasons why you should do this. If you have a MacBook, then the new 27-inch LED Apple Cinema Display is one of the most convenient monitors to have, thanks to its host of features that are geared towards MacBooks.
You'd think because laptops don't have extremely powerful graphic cards that you could stick with smaller screens, but there is so much that you can do with a big computer monitor, that your best bet is to get a big one. Currently, the ones that make the most sense are 27" or 30". There are a few companies that make 27-inch LED LCD computer monitors, and those should be the ones to get. The ones from Dell, Gateway, and Viewsonic also are quite affordable. If you haven't thought of this before, a big computer monitor is a good HDTV replacement, especially if you are a student or someone working with limited space. You can easily stream or watch your favorite shows in HDTV format on your computer. This also lets you cancel you cable TV, something that I haven't paid for in years. If you're a gamer, then plugging your video game console into your big computer monitor is also quite an experience. This is because a computer monitor has a much higher resolution than HDTVs. You'll end up seeing quite a few more details this way. [images via ZDnet, Apple, Treadstone Studios]