Here are cool Jewish acapella songs about Hanukkah: Chanukah (Shake it Off) and All About That Neis [more inside]
The Book of Purim (Hasa Diga Eebowai). The students from Hebrew Union College-Jewish Institute of Religion Year-in-Israel class 2011-2012 present, "The Book of Purim!" A Purim Parody of "The Book of Mormon" (SLYT, long but worth it.)
Forget Adam Sandler. Over the past few years, there has been a proliferation of Jewish take-offs of popular songs. The Fountainheads have produced Purim and Pesach (Passover) covers. The Maccabeats had a good amount of exposure with their Hanukkah and put out a Purim, too. Of course, not all of these songs are covers.
"The Elders of Zion, the venerable and shadowy Jewish organization that controls the international banking industry, news media and Hollywood, has announced that it is disbanding so that members can retire to Florida and live out their golden years on the golf course." [more inside]
Purim in Jerusalem: An exhibit of photographs by the late Yankl Conzen, currently on display at The Jewish Theological Seminary (NYC) in recognition of the Jewish festival of Purim (March 13-14, 2006), which features 45 works from the late 1990s depicting children from Jerusalem's Orthodox Me'ah She'arim neighborhood dressed for Purim celebrations: "Conzen's photographs offer an unflinching look at children in military and police uniforms, princess outfits, masks, and more traditional roles like Esther and Mordecai. Others mimic their elders with fake beards, long black coats, and wide-brimmed hats. Some are smiling, but many appear troubled. In effect, they serve as a microcosm of childhood itself, with its rapid emotional swings among fear, sadness, and happiness."