Sure.
He was the best comedian there for a long time.
The funniest in Conan I seen was the Star Wars nerd lines (I went to episode II dressed myself maybe that was why it was funny; he could have done something funny with the xbox 360 line too, adults waiting for a kids game, for themselves, ps3 line coming up so..)
Also the congo bongo thing was funny some time ago, no it was gabon bongo:
http://news.bbc.co.uk/1/hi/world/africa/4490626.stmAnd sometimes there have been funny comedians, not too often, the uptight citizens brigade and ali g were the funniest I seen.