Not being any kind of an expert, I do not know the name of the episode, but my favourite Voyager bar none, and one of my favourites of all Star Trek episodes is where the Holodeck takes them to the 1930’s sci-fi serial a la Buck Rogers. I find it hilarious, especially when the captain joins in...
My favourite episode of Voyager bar none is the one where they re-create the Flash Gordon period of science fiction in the holodeck. Captain Janeway is especially hilarious.