My wife recently bought me a DVD of 5 of Jack's television shows from the 1950s. I found them interesting and entertaining but, still, somewhat disappointing. For me, the gold standard for 1950s comedies are I Love Lucy, The Honeymooners and the Burns & Allen Show. Jack's shows were just not up to that standard.
While I'll concede that it may not be fair to judge Jack by just five shows, these shows were markedly inferior to I Love Lucy, The Honeymooners, and Burns and Allen in just about every measure, except, perhaps, for their budgets. Three of the five Benny shows were almost verbatim rehashes of earlier radio shows with every joke repeated in the exact way as it had been done on the radio. And the other two shows were an odd mishmash of skits very loosely tied together with a couple of monologues from Jack standing before a curtain.
I think Jack's TV shows, at least if these five were representative, suffered from two major flaws. First, Jack clearly missed the presence of his radio cast. I realize that Dennis and Mary appeared on a few episodes, but their absences, along with the irreplaceable Phil Harris, radically changed the chemistry of the show. Only Rochester was around to prick Jack's pretensions and vanities, and, without Mary, Phil and Dennis joining him, Jack's persona seemed less lovable and more pathetic, even with all the guest star appearances. The second flaw was Jack's failure to seriously retool his show for television. What worked on radio did not automatically translate to TV. A perfect example is an elaborate visual gag on one show where Rochester was seen churning butter, sewing Jack's clothes and pushing Jack in his hammock with the aid of a Rube Goldberg-type contraption. Putting aside the uncomfortable image of Jack resting while ordering Rochester to do all this work, on the radio this would have been done as a quick throwaway gag that would have gotten a laugh because of the ridiculousness and impossibility of the description. Indeed, often as not, Jack would have answered Rochester's description of this with a "Oh, don't exaggerate Rochester." But seeing it acted out on TV took away the impossibility of the description and made it very real - and much less funny.
Both I Love Lucy and Burns & Allen had their roots in radio and both occasionally recycled old radio scripts, but both shows were sharply retooled for the new medium. In I Love Lucy's case, this was necessitated by the wholesale change of cast, especially the addition of Desi Arnaz, and the recognition of Lucille Ball's talent for physical comedy. Burns & Allen did not have the same extensive cast changes and neither George nor Gracie were particularly physical comedians, but the B&A producers quickly recognized that they needed to make some major changes to the radio format for it to work on television. Thus, they inserted the plot device of having George watch the events on his television and comment on the action. More significantly, they changed George's character from one who was frequently annoyed by Gracie's illogic to one who was bemused and took it all as a matter of course. This had the effect of making both George and Gracie more funny and more likeable. On TV, you could understand why George loved Gracie; on radio it was not always so clear.
Now, I'm not saying that Jack's TV shows were terrible by any means. There were plenty of laughs and it was certainly better than most comedies of the 1950s and 60s, such as the dreadful Donna Reed Show, Hazel and Dennis the Menace. But as someone who has greatly enjoyed Jack's radio shows, I just did not find the television shows to be anywhere near as good.