The sketch itself, with the great writing, great acting (I particularly enjoy when Gene, played by the great Will Ferrell, says, ‘…and I’d be doing myself a disservice…’) and great set/costumes (after doing the sketch in dress rehearsal with a normal size shirt, Ferrell decided to wear the too-small shirt before the live taping) indeed never gets old.
However, saying “mOre cOwBeLl!!”, like shouting “FrEeBiRd!!”, got very, very, very old a long, long time ago.