What’s hot online right now: “Dancing with the Stars” gets new cast; Gisele Bundchen sings in ad; Rosh Hashanah begins.

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“Dancing with the Stars” has announced its celebrities for the 17th season. Among them: “Snooki” from “Jersey Shore,” Bill Nye “the Science Guy” and Amber Riley of “Glee” fame.

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Rosh Hashanah, the Jewish New Year, is celebrated in 2013 from sundown Sept. 4 to nightfall Sept. 6. People are wishing each other well for the start of the New Year tonight.

Hot video: Gisele Bundchen sings in new ad

Tom Brady's famous wife proves she's got skills on the mic.

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