Decent Git Branch Visualization tool

Here's a cool Git GUI tool that I've been using in the past - Source Tree. I highly recommend it.

Stock gitk --all or, at the console:

git log --graph --oneline --decorate --all

(I have this call aliased to git overview, by the way). To get better results with the display consider setting the color.ui Git configuration variable to auto.

How about ungit?

Ungit can be a bit tricky to install if you're not familiar with Node.js, but IMO it's the best git GUI I've seen so far.