The Irony of fate (Ирония судьбы, или С лёгким паром!) totally rocks. I mean, I very much enjoyed it.
Its one of those classic russian-comedy drama. sad they dont make such anymore.
The movie is soooooooooooo good they show it every 1st of January of EVERY YEAR since, I think 1975!!!. Can you beat that?
There is a part II but imo, it wasn't necessary. Haven't seen it though.