Distributed version control system comparisons

Good, and mostly unbiased, comparisons of git vs. mercurial:

• http://stackoverflow.com/questions/1598759/git-and-mercurial-compare-and-contrast/1599930#1599930
• http://code.google.com/p/support/wiki/DVCSAnalysis
• http://www.python.org/dev/peps/pep-0374/

The last one also compares to subversion and bazaar, and includes great example use cases for common operations in all four systems.