You like dancing? Same with me! Before my bar-mitzvah my parents made me take dancing lessons-- as well as Hebrew lessons. I never used either after the great event. But I once won a Junior Cha Cha contest in Miami Beach when I was 12 and visiting my grandma for Pessach. I always associate the cha cha, mambo, samba, rhumba and tango with Jewishness, like pastrami on rye with mustard. And Perry Como. I mean, after Frank Sinatra what could be more Jewish? This one was a hit in 1954 (and here's Como performing it back then); more recently it experienced a bit of a revival because of Ocean's Eleven.