Rogers Video has a "Top 100 Rentals of 2004" list up on their website. I've seen 57 of them. According to them, that's "Impressive.... very impressive". :)
Here are the ones in the list that I still at least slightly want to see (and haven't already seen):
22 - Starsky & Hutch - only kind of, I fear it won't be very good
38 - Under the Tuscan Sun - ditto
44 - Napoleon Dynamite - this, I really want to see
50 - 21 Grams - I've wanted to see this one since last year's Oscars.
52 - Kill Bill Vol. 2 - I didn't really like the first one, but I heard the second one is better.
61 - Girl Next Door, The - This looks funny.
71 - Bad Santa - I heard this was a laugh riot.
74 - Super Size Me - Should be interesting.
89 - Ladykillers, The - Eh, not sure about this one - but I'll give it a look.
90 - Honey - Guilty pleasure ;)
98 - Garden State - I really want to see this.