If your week has involved dreary weather, ridiculous requests from parents, lackluster rehearsals, costume malfunctions or all of the above, TGIF. Celebrate with us by grabbing yourself a well-deserved piece of dark chocolate and watching this silly dance video, “CoinciDANCE.” We dare you not to smile. (Or shake your own shoulders in response.) It’s all the work of Handsome Dancer, a comedy group with a wry sense of humor and some sweet, sweet moves, led by James Manzello and Matt Pavich.