Look here for native Linux games:
Look here for games that run under Transgaming's Cedega:
For office docs, use OpenOffice (a Win version available as well, so try it out). For other stuff, there are usually open source equivalents.
As for log files, Linux has them too. The difference is that they are documented, and can be edited/erased manually if you need to. They won't, however, be transmitted to anyone else unless you e-mail them to somebody.
For drive partitioning, I recommend Partition Commander. It's very good and supports several types of Linux partitioning schemes (file formats) such as EXT2 (virtually obsolete, but still used), EXT3 (Standard), and ReiserFS (Very nice alternative to EXT3). Make sure you go with a Linux distro based on the 2.6 kernel, for the latest in hardware support and pre-emptive kernel support (better multimedia response).
You might want to duel boot to start. In that case, make sure XPee is installed first (be careful if you have a Dell, they put an extra partition on the drive).