If anyone does, Allen Hill deserves the title of Houston’s Mr. Entertainment. For one thing, it’s right there in the title of his booking and events company, Allen Hill Entertainment. But really, it’s because for the past 20 years, Hill (an alum of Banana Blender Surprise, rulers of the early-’90s Texas college-party circuit) has been preaching the gospel of good-time rock and roll as the Bayou City’s undisputed King of the Oldies. For Saturday’s anniversary bash, Hill and his merry men — who have absorbed the pop, rock and soul hits of yesteryear like so many tuxedo-clad sponges — have taken it upon themselves to play every song the band has ever played at a public performance, a grand total of some 130 good-time oldies. Were they to include the songs from their multitude of weddings and other private gigs, that list might be two or three times that size.