Tabitha
http://www.wolframalpha.com/input/?i=tabitha
Rise begins right around the second season of _Bewitched_ when the character Tabitha was introduced; peak (maybe coincidentally) appears to be around the short-lived 1977 spinoff series.
I bet Liam Neeson is the reason for the new wave of Liams, but I can't decide whether the Karate Kid remake is the reason for the wave of Jaydens, or if it's just a coincidence.
Wouldn't we expect the mode to be 75, while the median and mean would be younger? Assuming, of course, that Wizard of Oz produced any sort of lasting increase on the popularity of Dorothy as a name.
I wouldn't expect a lasting increase more of a S curve. Movie comes out, there is a spike in Dorothy usage. A few years pass and the original spike slows down. Then the movie is seen as old fashioned and you start to see a negative trend. Then Dorothy is seen as an old lady's name so it sees an even sharper decline.
I've noticed my name, Bret, spiked in popularity in 1959 and 1982, corresponding nicely with the TV shows 'Maverick' and 'Bret Maverick'.
http://www.wolframalpha.com/input/?i=bret
I wonder what other pop culture events influenced naming trends.