HH94 was three levels using the Holidaeus planet, each one being a different time of day. At the end you got to watch a movie of santa flying his reindeer, Eva dressed as an elf and one of the times Jazz kisses Eva.
HH95 was four levels using the Candion and Bloxonius planets. I don't think there was any ending movie, I could be wrong.
HH98 was three levels using the HH98 tileset, with christmas enemies and all. Santa Bilsy as boss.
From what I've heard, I believe TCC is the same thing as HH98, only with Lori as well.