Well here's the problem: John Travolta and William H. Macy - always worth a watch. But Tim Allen and Martin Lawrence? Those two have been "chevvied" for some time - Allen since "Galaxy Quest" and Lawrence since... well... he never was funny. If only they'd tossed Ben Stiller into the mix, then I really would have been definite about staying away.
That, of course, is IMHO...
Siggy