P.M.
Studies suggest that kids under two years should not watch television. It can apparently keep certain brain areas from developing properly, and cause problems later with concentration in school. And watching television does little to nothing for developing speech. Kids need to interact face-to-face with live people in order to really take in language, grammar and pronunciation. Even watching televised faces doesn't do the job. (http://www.ted.com/talks/lang/eng/patricia_kuhl_the_lingu...)
Your daughter is only 16 months, so YOU are the one who gets to decide whether she will or won't watch. Have you considered just listening to music while she's awake? There are plenty of CD's made especially for children. My grandson loved these, and also adult music.