Rob Reiner & Larry Bishop at The Hungry i.
In the late sixties Rob Reiner and Larry Bishop spearheaded an improv group in Los Angeles called The Session, which included Richard Dreyfuss and others. Reiner and Bishop formed a duo out of that group and went on tour. Here they are doing press for a show at The Hungry i, courtesy of the San Francisco Bay Area Television Archive. Within a year, Reiner would find himself onstage at The Committee. Reiner provided more background about this time in his 2011 interview with A.V. Club which you can find here.