Impressive as it is to open there, a film that can actually move up to the No. 1 spot in its second week of release has to have more going for it than media hype. This week, Dave expanded its run by more than 400 theaters but also benefited from strong word of mouth, generating a healthy $5,432 per- screen average. That was enough to launch it to the top. And then Bruce Lee fever began doing a faster flameout than expected: In its second week, Dragon took a notable drop, due in part to the action-film competition posed by Posse. Mario Van Peebles' Western opened to an inconclusive $5 million and will now have to shoot it out with the major summer releases. As for Neil Simon's Lost in Yonkers, it got lost in the shuffle. WEEKEND TOP TEN GROSS WEEKS IN GROSS* TO DATE RELEASE

1 $8.51 Dave $18.43 2 Warner Bros. (1,566 screens) 2 $6.27 Dragon $19.23 2 Universal (1,938 screens) 3 $5.31 Posse $5.31 1 Gramercy (949 screens) 4 $4.06 Indecent Proposal $84.08 6 Paramount (1,922 screens) 5 $3.00 Lost In Yonkers $3.00 1 Columbia (1,190 screens) 6 $2.10 Sidekicks $10.78 6 Triumph (1,270 screens) 7 $1.60 Benny & Joon $17.40 5 MGM (1,314 screens) 8 $1.32 Indian Summer $11.96 4 Disney (1,290 screens) 9 $1.30 Sandlot $24.60 6 Fox (1,426 screens) 10 $1.02 Map Of Human Heart $1.28 4 Miramax (523 screens) Audience polling information provided by Cinemascore *Weekend of May 14 - May 16 (all dollar figures in millions)