Fantasy leagues. I've enjoyed a few NBA fantasy seasons and I believe I have done one MLB season. I faired well in all of them but I was left frustrated that though I made what I thought were wise transactions, and most were given my purchases and trades improved the value of my team, I stood in the middle of the pack by seasons end.
As some of you know I check into some political blogs to keep myself informed of the 'news'. I saw an interesting post that lead me to RealClearPolitics' play-money '08 market powered by Intrade. Wow! How fun is this! Register and try it out. Talk about a cool fantasy 'league'.
GOP Senate in 08, a contract/stock that seems to be doing well for me at the moment.
Update: GOP Senate contract is down. Darn Dems.