If you're not up on the "Wallykazam!" mythos, here's a brief refresher: The show follows the fairy tale adventures of Wally Trollman (Thomas Langston) and his group of friends, one of whom is the somewhat antagonistic Bobgoblin, who is probably the closest thing the show has to a villain. Normally the Bobgoblin is voiced by Aria Capria, but for Season 1, Episode 23 of the show, entitled "Wally Saves the Trollidays," a possibly overqualified performer took over the role of "Bobgoblin's Singing Voice" — and as fate would have it, the performance will now stand forever as the final one Tony Bennett ever gave for TV outside of a handful of music videos and specials.
If you're looking for an unorthodox way to honor the memory of Tony Bennett, you might take a few moments to listen to his (exceedingly brief) contribution to the song "If Every Day Could be a Trolliday" from "Wallykazam!" which has been uploaded to YouTube.
It's probably not the song that Bennett would want to be remembered for, but it is a historically significant part of his body of work, and for Nickelodeon viewers of a certain age, probably their first or even only exposure to the iconic performer.