Shark Tank, ABC's only series where poor marketing skills are discussed outright, scored its highest ratings (6.2 million in the 18-49 demo) yet yesterday, marking the show's fifth week of gained viewers. I'm almost positive marketing deals in the actual world don't involve a stoic panel of suits granting thumbs-up and thumbs-down like Brooks Brothers-sponsored gladiators, but... this is actually a shockingly watchable hour of television. The one where that woman sold the luxury plus-size clothing line? A great idea for real life and a GSN reality side plot. [THR]