TV highlights: 'Generation Cryo' debuts

Mosby, Robin and Barney are turned into nursery rhyme characters when Marshall has to make up a few stories to get his restless son to sleep on "How I Met Your Mother" (CBS at 8 p.m.). Marshall tells him the tales of "Mosby at the Bat," "Robin Takes the Cake" and "Barney Stinson, Player King of New York City."