"Mamma Mia" starts tonight at Fair Park Music Hall (I know, as if it hasn’t gotten enough publicity already — I can’t get the "… here I go again my my … song out of my brain). It runs through August 30. Get tix here

Also on the fair grounds, at the Old Mill in Restaurant, 3611 Grand, catch Keith and Margo’s Murder Mystery Dinner Theater. For $69 per person, participate in a 3-course dinner including an "ultra interactive experience" with a touch of "twisted humor", in which diners attempt to unravel a murder mystery. Call 214-426-4600 for reservations.

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FREE family game night at Lone Star comics. Details here.

Cheer on runners or earn your own bragging rights at the Hottest Half half marathon and 10K. You can register through race morning, and Elvis will perform. Really. Visit hottesthalf.com for more information.