I genuinely like this movie, because...
Leslie Nielsen is hilarious.
Seriously I laughed more in his scenes than I did in the first two movies put together. Unfortunately he wasn't in Scary Movie 4 much (but his 2 minute section was brilliant) and died before Scary Movie 5 which is probably why those two are pretty bad. Without him this movie would probably get a 5/10 from me. Such a legend.
R.I.P
Leslie Nielsen 1926 - 2010