Witches and convicts and ogres, oh my!

For the second week in a row, "Harry Potter and the Prisoner of Azkaban" locked up the #1 spot at the box office, according to early estimates. Though ticket sales for the flick dropped drastically from

$92.6 million in its opening weekend to more than $35 million in its second, Harry Potter managed to keep Vin Diesel at bay.

Caught between Potter and another heavy-hitting box-office warrior, Shrek, "The Chronicles of Riddick" won the #2 spot. The dynamic duo of Vin Diesel and Judi Dench helped "Riddick" bring in $24.6 million in its opening weekend.

Harry Potter Fends Off Riddick At Box Office