I watched Rascals again last night, and while the whole thing might not be funny, parts of it just crack me up completely.
"He's my number one Dad!"
Tinker Tenor Doctor Spy is hilarious, as a couple of people mentioned above - as well as the aforementioned moments, I loved Janeway's little disapproving glance at the Doctor as he's painting Seven ("he does the hands well.") And the three women fighting over him in the briefing room. XD