One of the coolest feature of Github is the calendar chart that is shows for your contributions. You can get a similar chart for any Mercurial repository on your computer using the Punchcard extension.
$ hg clone https://bitbucket.org/birkenfeld/hgpunchcard
hgrcby adding these lines:
[extensions] hgpunchcard = /path/to/hgpunchcard.py
$ hg punchcard
This saves a file named
punchcard.png that a chart of your commits to this repository, as shown above.
Tried with: Mercurial 2.8.2 and Ubuntu 14.04