Do you do it the old fashioned way, or do you use a site like Ancestry.com?
Whats the farthest back you've gotten (direct decendent, not going back through a child to another marriage to reach a longer line)?
Found anything interesting?
The best I've done is 19 generations to a Henry Makepeace born 1455 who belong to a guild at the same time as a man who was possibly William Shakespeare's Great Grandfather. He was later a master of the guild.