The Distrochooser helps you to find the suitable Linux distribution based on your needs!
I found this site a while back - basically it will ask you a bunch of questions on your usage of your PC, and will came out with a list of recommended distros, and a list of reasons why YOU could like or not like it.
I ran through this survey like questionnaire; deliberately skipping questions that would pigeon-hole me into Arch or some DE based decision (which is meaningless). [FYI I skipped the 'User Experience', 'Distribution: Scope' and 'Software:Updates' questions]