Introducing the Dwights(2007)

Tim's mom, Jean, is a bawdy and risqué comedienne, on the downside of her career, still hoping to make it big. His intellectually challenged brother Mark helps their mother rehearse for shows. Together, they inhabit a non-traditional household where chaos is the norm, the music is always on, and Jean's larger-than-life personality takes center stage. When Tim meets and falls for gorgeous Jill, his home becomes a combat zone as his mother fears this new girl, whose name she refuses to remember, will "break up" the unique family unit she's tried so hard to keep together. In the midst of his mother and girlfriend locking horns for his affections, Tim must learn to manage the emotions of the women of his life without losing himself in the process.