http://wiki.answers.com/Q/How_much_money_did_the_cast_of_friends_make_per_episode
They started out making about $22 grand an episode, but they topped out towards the end at a million dollars an episode.
Read Leonard Nimoy’s bio. For years in the 50s and 60s he worked for $55/week for a speaking part, $25/week for a non-speaking part. A new show, new job every week if you could manage it. Survived on studio cafeteria left-overs. Don’t begrudge him a cent for the money he mad on Star Trek. He was never paid a dime in residuals from the the original series.