Nice, Atlassian continues to make my job much much easier in regards to Git. I love the work they've done on SourceTree, which was a promising and pretty app but very unstable before they bought it. It was hard to use it for critical work because it was crashing quite frequently. Now it's rock solid and I use it almost every day. I do know most of the command line tools but I like using a GUI because it makes my repo better when I have a visual overview of everything that's going on. It helps me group commits in logical order and I've reduced the amount of basically meaningless fixes and style commits greatly.

I'd never even heard of Tig but I am already in love after about 5 minutes of usage. I'm comfortable with the Git CL and if you toss Git log enough flags, it gives you a very nice printout, but you can't actually DO anything there. This is a nice solution when you're working on a remote server but I'd also bet that if SourceTree is not open, I'm going to find myself more and more dropping into Tig rather than using SourceTree.