WhatTheFont

[LogicalDemise]

http://www.myfonts.com/WhatTheFont/

You simply give the URL or upload an image and they analyze the characters to determine what font you're using. The only problem is, they then charge you to download the font. You can sort of bypass this if the font is avaliable for free elsewhere though, just Google for it.

[chilipie]

http://www.fontifier.com/

This is really cool as well - you can turn your own handwriting into a font that you can use in Word Processors etc.

[shwaza]

lol i tried 3 images and none of them could tell me what the font was...

[undacuvabruva]

yea it doesn't work.
I think maybe it has to be a file with text in it, and not in an image

[mck9235]

I keep getting a too many componet thing, so I dont no how well it works... ;)