Teen heart-throb Zac Efron's latest film, the light fantasy comedy 17 Again pulled in enough teen greenbacks to finish in the top spot in this past weekend's box office. . It brought in more than $24 million in ticket sales in its debut- weekend - almost more than the next two top-grossing films combined.

The only sci fi flick to debut this weekend was the Spanish-language Sleep Dealer, whichwas shown only an a hanful of theatres in Los Angeles and New York. It debuted at No. 10 on the genre movie list and No. 37 overall with just over $30 thousand.

The sole genre film set to debut next week: The Mutant Chronicles also is set for a limited release befire going to DVD and a broadcast TV debut on the Sci Fi Channel later this summer.

Following are the Top 10 speculative fiction movies in release in North America for the weekend of April 17-19 , 2009.

RANK #. (Overall Rank) Title - Weekend Gross | Total Gross [Budget]

1. (1) 17 Again - $24 milllion | $24 million [N/A]
2. (3) Monsters vs. Aliens - $13 million | 163 million [$175 million]
3. (8) Knowing - $3.4 million | $74 million [N/A]
4. (10) The Haunting in Connecticut - $3.2 million | $52 million [N/A]
5. (11) Dragonball Evolution - $1.6 million | $7.8 million [N/A]
6. (15) Race to Witch Mountain - $0.7 million | $64 million [N/A]
7. (23) Coraline - $0.2 million | $75 million [N/A]
8. (26) Push- $0.09 million | $32 million [$38 million]
9. optical channel(30) The Curious Case of Benjamin Button - $0.06 million | $127.5 million [$150 million]
10. (37) Sleep Dealer - $0.03 million | $0.03 million [N/A]

Source: Box Office Mojo - list only includes science fiction, spy fi, fantasy and dark fantasy/horror titles.