Asking Slashdot, you'll get vastly differing opinions but you'll likely get some interesting information which will likely be useful.
However... the only way to really know which distro is "right" for you is to try several and pick one.
So I would suggest geting out your favorite Virtualization software (VirtualBox, KVM, etc) and try several distros at once. Find out what you like.
I recently did this back in August 2012. Here are the distros I liked:
*Mint Debian 201204
Fedora 17 (18 has a yucky installer)
*Debian (Squeeze, Wheezy, Sid)
Arch (fastest package installs by far, no sound in a VirtualBox VM)
*Pear Linux 5 (looks just like a Mac, except a Pear in place of an Apple. Fun to play with.)
Vector Linux7.0 (based on Slackware, has package management. Fun, snappy.)
Least recommended: Gentoo. Attempting a base install + KDE4 was a THREE FULL DAY compile, after which X refused to start. Very frustrating.
2nd least recommended: FreeBSD, only because there's no GUI by default, and I couldn't find instructions to install one.
Regardless of which you choose in the end, best of luck to you. :)