Conversation so far:
Was the Max Weinberg 7 the house band from the first episode?
The show's house band was The Max Weinberg 7, led by drummer Max Weinberg, who also served as a sounding board for O'Brien on the show .
Were other bandleaders considered before Max Weinberg got the job?
CANNOTANSWER.

Question: What notable comedy bits did Weinberg do?
Self-contained rewrite: What notable comedy bits did Max Weinberg do on Late Night with Conan O'Brien?