Share1t.com is one of those websites I wish existed more. A form to share files up to 100MB; simple, neat and fast (thank you, whoever, for fixing the broken cables). A great, nifty tool from the guys at builtBackwards. Love it!
Suggested by a friend of mine, Tinysong allows you to share any song with your friends. A simple web application. I wish more web apps were like this, simple and straight to the point.