‘How I Met Your Mother’ reaction: Tracey Ullman’s surprise cameo

Were you surprised about Monday night’s “How I Met Your Mother” episode? If you were, we certainly cannot blame you. “Vesuvius” was one of the crazier installments thanks to mostly one shocker at the very end: Seeing Tracey Ullman in a role that was never previously announced. So how did the show pull off this […]