Tig is one of the most valuable hidden gems out there.

I use it both for simple things like a good looking commit log (the default view), but like especially how I can navigate into an old commit, hit t (for tree), and navigate and peek into the files available in that specific commit, hit b (for blame) to view which commit changed a particular row etc.

I like how all the different views play together into such useful workflows, and how, just like in vim, everything is available one mnemonic keystroke away. Hit h (for help) inside it to explore ... you will be surprised at the power of using these different views together in practice.