If you are a film student or a pro who has access to software like Avid, Premiere, Final Cut or Vegas this is great! If you are not – fear not! There are plenty of cheap and free editing tools like e.g. Lightworks available, too.
There are plenty of companies like Apple and Dell that have great editing hardware. But what’s the right choice for you? Check out this article about editing hardware at the VideoGuys.
You might also want to check out those two posts (post 1, post 2) at Tomshardware forum.
Let us know if you know more insightful pages on editing hardware.