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Shaquille O'Neal

Shaquille O'Neal, a pre-IPO investor in Google, has expanded his business interests even further since retiring as an NBA player after the 2011 season.

Even if you don't watch TNT's "Inside The NBA," where Shaq is an analyst, it's a good bet that he'll pop up on your screen in commercials for car insurance. Or pain relief. Or home security. Or donuts. And more.

HBO's Real Sports take a closer look at Shaq the brand in its latest edition that premieres Tuesday at 10:30 p.m. ET/PT. Here's a preview: