Don't let the other guy have all the fun! It's your game, too. Roleplaying is a contact sport, so get in there and make it happen!!!
There may be a reason why your games aren't as awesome as they could be. Could be the system, might be the GM, or possibly it's you - the player. I'm not saying this little self-help guide will turn you into the boss overnight, but it's a start.
How to Game Master like a F****** Boss has done a lot of good for GMs over the last couple years. This shows the other side of the curtain, and I believe it's just as vital for GMs to know what's going on with players as it is for players to examine life behind the screen.
It's a quick but important read with tips, tricks, and techniques for getting the most out of your roleplaying game.