Specific tips/fun stuff

• Virtual Network Computing (VNC) can be used to access your computer from anywhere if it's connected to the Internet and you know its IP address (use ifconfig). vnc-java can automatically create a webpage with a Java applet that eliminates the need for a VNC client. Try using x11-vnc
• for remote X you can also use simply X with xhost as X is a network protocol, or you can do X forwarding with ssh.
• WINE will often run your old Windows programs very well. It's hit and miss, but often more complex, graphics-heavy applications will work better than specifically integrated Windows apps.
• There are a number of unique, nicely-made open source games that run under Linux:
  • Battle for Wesnoth (turn-based strategy game with elements from RPGs) http://www.wesnoth.org
  • Blob Wars (platform shoot-em-up)
  • Celestia (not really a game, but a very detailed astronomical program that can take you anywhere in the solar system and beyond) http://www.celestia.space/
  • Enigma (marble-rolling puzzle game) http://www.nongnu.org/enigma
  • GnuGo (one of the better Go AIs available, use ccGo or JaGo or cGoban for a user interface) http://www.gnu.org/software/gnugo/gnugo.html
  • Frozen Bubble (similar to Bust-a-Move) http://www.frozen-bubble.org/
  • Kobo Deluxe (4-way scrolling shoot-em-up) http://olofson.net/kobodl/links.html
  • Orbit (simple 3D space combat simulator) http://www.head-crash.com/orbit/
  • Rocks'n'Diamonds (Boulderdash clone plus a couple other games, too) http://www.artsoft.org/rocksndiamonds/
  • Tux: A Quest For Herring http://tuxaqfh.sourceforge.net/
  • Extreme Tux Racer (sliding down the mountains and catching herring at over 100 km/h) http://www.extremetuxracer.com/
  • Nexuiz (A Unreal Tournament like first person shooter) http://www.nexuiz.com
  • Warsow (A competitive quake3 like first person shooter) http://www.warsow.net
• Yakuake, a drop-down console, a la Quake's in-game console.