From hail to hobos, having something on your roof is rarely a good thing. Two exceptions: Santa’s reindeer and Jewish milkmen. You’re in luck on the latter, because Fiddler on the Roof stages the first of eight shows at 7:30 p.m. Tuesday at Civic Center Music Hall, 201 N. Walker. The Tony-winning classic once was Broadway’s longest-running musical. Tickets are $20-$50. Call 297-2264 or visit okcciviccenter.com.