Coming up next, I've decided to watch all seven of the versions of Hamlet that I have on disk. For the record, these are:
1)Hamlet (1948) - Olivier
2)Hamlet (1964) - Burton
3)Hamlet (1990) - Gibson
4)Hamlet (1996) - Branagh
5)Mystery Science Theater 3000, Show 1009: "Hamlet" (1961/1999)
6)Hamlet (2000) - Hawke
7)Hamlet (2009) - Tennant
Depending on how "Hamlet"-ed out I am by the end of this, I may throw in a few other things as well.
Obviously, I'm not always going to be able to watch these all "one per night", the Branagh version particularly may be spread over as many as three nights.