Rachael Ray stumps Australian actor Alex O'Loughlin, who stars in 'The Back-up Plan' with Jennifer Lopez, by testing his knowledge of theme songs to classic American TV shows on 'The Rachael Ray Show' (weekdays, syndicated).

O'Loughlin, who claims to be an avid fan of American TV, correctly belts out a line from the 'Brady Bunch' theme, but fails at 'The Golden Girls.' And, when he can't recall the theme to 'Cheers,' the audience groans, then starts to sing the song for him. "I just wanted to hear the audience sing," O'Loughlin said sheepishly.

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On 'The Early Show' (weekdays, 7AM ET on CBS), anchor Maggie Rodriguez reminds actor Alex O'Loughlin, who stars with Jennifer Lopez in 'The Back-up Plan,' of an old quote in which he said he's afraid of losing his anonymity due to fame.

"It is true. I think that a lot of actors are private people. I think a lot of actors really, you know, don't live the life that the rest of the world thinks we would live," O'Loughlin said, adding that he "might have to move to Hawaii' in order to deal with his increasing fame.

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It's gotta be tough turning down Jennifer Lopez, a.k.a. Anita on 'How I Met Your Mother' (Mon., 8PM ET on CBS). Especially if you're Barney.

But even when she lured him in with the promise of getting lucky -- forget about the twelfth date; she'll do it right now – he stuck to his guns.

And is it just us, or is J-Lo everywhere lately? Talk about a workaholic, and the mom of two shows no signs of slowing down. 'The Back-Up Plan' arrives in theaters April 23.

Watch the video after the jump.