Ben Stiller making his way into the Good Morning America studios ... Madonna's son David getting caught in the rain on the Upper West Side ... Robert Downey Jr. leaving his hotel in Midtown ... Maggie Gyllenhaal and Peter Sarsgaard walking to a toy store in Brooklyn ... Ugly Betty's Becki Newton signing autographs outside ABC ... Lisa Rinna walking around Midtown ... Kelsey Grammer and his wife returning to their hotel after a visit to the doctor ... and John Mayer walking near his apartment, completely covered up with a scarf over his face.