Slam dunk for Will Ferrell?
The funnyman's ''Semi-Pro'' will be No. 1, but an R rating might hinder its business
''Vantage Point'' peaks at No. 1
Ensemble political thriller performed strongly, topping rivals ''Jumper'' and ''The Spiderwick Chronicles''
Books that inspired movies
EW critics compare the literary and the film versions of ''Jumper'' and ''The Spiderwick Chronicles''