Overcome by a compulsive need to know how many keys I type daily, I forked [LogKeys](http://code.google.com/p/logkeys/) and created countkeys, which is essentially a keylogger that just counts instead of logging.
Countkeys supports all the same features (running as a daemon, which will create logs showing all keys typed for a given session, specific device logging, etc) but also supports foreground mode which provides more instant gratification.
You can get it from my apt repo ( deb http://packages.psych0tik.net/apt/ sid main contrib non-free ) for i386 and amd64, or the source is available at https://github.com/richoH/countkeys
The current release 0.2 still includes the bulk of logkeys documentation, I should have 0.3 out in the next 48 hours or so.