The Merv Griffin Show just goes to show how strong Seinfeld remained right up until the end.
The Seinfeld formula of bringing all the seperate stories together for the finale worked wonders here when they all gather at Kramers "studio".
The funniest aspect of the episode, apart from Kramer setting up an old TV talk show set in his apartment, is the way in which the other characters seem to go along with the madness. They all sit quietly when not being "interviewed", they all move along when another person shows up and even Jerry´s girlfriend waited until Kramer called her into the studio before she confronted Jerry.
Add in Kramer´s cue cards, audience SFX and the B-stories and it is definitely one of the best 30 mins of comedy TV produced.