I'm a recent zsh + oh-my-zsh convert, and I have a severe case of "why didn't I do this before"s.

Here is a great gallery of oh-my-zsh themes: http://zshthem.es/all/

Yea, it's pretty awesome.

What's really neat is you can even use it on Windows.

My personal setup is Cygwin Zsh inside Console2 (tabbed cmd.exe shell) proxied via ansicon.exe (makes cmd.exe ansi color escape aware). It's not quite as nice as say Konsole on linux or iTerm2 on a mac, but it's the best I've found for windows.

Setup guide:

Setup console2 like this http://www.hanselman.com/blog/Console2ABetterWindowsCommandP...

This post sets up ansicon: http://www.kevwebdev.com/blog/in-search-of-a-better-windows-...

I'm stuck on Windows at work, and landed on ConEmu as my terminal emulator (running bash, though - I've never made the jump to zsh):

https://code.google.com/p/conemu-maximus5/

I haven't tried Console2, so I can't provide a comparison, but here's Scott Hanselman deciding to switch: http://www.hanselman.com/blog/ConEmuTheWindowsTerminalConsol...

See also antigen(https://github.com/zsh-users/antigen), it works with oh-my-zsh and makes adding extra plugins a lot cleaner.