• Martin sang two solo numbers per show, one a serious ballad. He would join his weekly guests in song medleys, trading lyrics back and forth. Some of these duets were deliberately played for laughs—with
Liberace, for example—with special lyrics by Lee Hale to suit the performers. • One recurring segment was based on Martin's club act, in which he would begin to sing a popular song and suddenly insert a gag lyric in an attempt to make his pianist
Ken Lane laugh hard enough to break his concentration. The segment usually began with Martin leaping onto Lane's piano; in one episode, the real piano was secretly replaced with a phony one that collapsed when Martin tried to leap onto it. • A knock on the "closet" door occurred each week, with Martin opening the door to reveal an unannounced celebrity guest. Most of the time, Martin did not know who the guest would be, to keep his reactions more spontaneous, according to Hale's book
Backstage at the Dean Martin Show. • A regular gag during one season was the "Mystery Voice Contest", wherein Martin invited viewers to write in to guess who was singing a particular song. Invariably, it was the famous Frank Sinatra hit "
Strangers in the Night." Finally on one episode, Sinatra appeared to announce that he was the mystery singer. Martin handed over the prize, a trip to Los Angeles, where they already lived. • The finale was typically a production number featuring Martin and the guest stars. Occasionally it would be a musical sketch with Martin appearing as "Dino Vino", a disc jockey who played old records. A vintage record would then be heard, with Martin and his guests mouthing the words and pantomiming outrageously. • During the show's eighth season, the finale was a selection of songs from a popular
MGM film musical. Clips from the selected film would be shown, with Martin and guests singing a medley from the films. Among those saluted were
Easter Parade,
Words and Music,
Till the Clouds Roll By and the
1951 film version of
Show Boat. • When the show was canceled in 1974, a series of
Dean Martin Celebrity Roast specials were produced in
Las Vegas at the
MGM Grand Hotel. This tradition was started during the final season of the variety show and continued until 1984. ==Regulars and recurring guests==