Forget PTA bake sales, a coterie of SF's movers and shakers are hosting "Hot for Teachers," a party to benefit projects in Bay Area schools, at Club Mezzanine (444 Jessie St. near 5th and Mission). Enticements include: gourmet mac & cheese, a Van Halen tribute band, and a chance to win live auction "Hot for Learning" packages like ... "How to be Mayor." As Gavvy-N is on the honorary host committee, we're thinking we......