The movie 'Diary of a Mad Black Woman' did come out in theaters a few years ago - now it's on DVD and cable.
Recently went to one of TP's plays; liked it, laughed hard, atmosphere in the house was great. The plot, acting, was good; the sound and band was passable but the singers oversang - with all the runs, scoops, sustained high notes, etc. it was almost like they were trying to prove themselves and outsing one another, like it was a Gospel Opera or something. The other criticism I have is of the songs - lyrics serve the drama but it was mostly neo-soul - not a lot of variety in musical style.
I generally like the movie adaptations of his plays better - they seem more polished...