Sydney Opera House, Bennelong Point. Ends today, 2pm and 8pm. Tickets: $78-$104. Bookings: (02) 9250 1777 or online. Ends tomorrow. Mack & Mabel Sometimes love just isn’t enough. Things didn’t work out for film pioneer Mack Sennett and his wildly popular discovery Mabel Normand, and they don’t for the Jerry Herman musical named after them. Genuine affection for Mack & Mabel’s score underpins the occasional revival but the show will never be more than B-list at best, and then only if it gets a staging capable of diverting attention from its flaws. Herman’s score is eminently hummable — songs include I Won’t Send Roses and Time Heals Everything — but Michael Stewart’s book is lousy. Using clumsy flashback, it tells rather than shows, and Normand (Angelique Cassimatis) is defined through her passion for Sennett (Scott Irwin). Not a People Person Australian comedian Sam Simmons (pictured) will perform in Sydney for the first time in two years. This year, Simmons’s shows sold out at the Adelaide Fringe Festival, Melbourne Comedy Festival and the Edinburgh Fringe Festival. Last year he won the Barry Award for best show at the Melbourne Comedy Festival and best comedy show at the Edinburgh Fringe Festival. Sydney Opera House, Bennelong Point, Sydney. Opens January 5, 8.30pm. Tickets: $35-$45. Bookings: (02) 9250 7777 or online. Until January 14.