''4 IN THE MORNING'' (2007)
Plagued by insomnia, she cries, ''Stay up till four in the morning and the tears are pouring.'' Nobody likes a wet bed, Gwen.
''WIND IT UP'' (2006)
The Sound of Music superfan samples the film's yodels and pays homage to its ''My Favorite Things'' nighttime scene.
A platinum siren in pinup-girl shorts and blood-red lips, she writhes on a gold satin coverlet. More hot than ''Cool,'' don't you think?
''UNDERNEATH IT ALL'' (2002)
The singer begins this No Doubt clip as a vixen in her bordello-like boudoir, but ends it sweetly on clean, white linens.