When friend groups reunite in country houses, this week’s genre teaches us that old songs, old wounds, and binge drinking aren’t far behind. Having just hung out in the Poconos two weeks ago (and gone 2 outta 3 from that list), we decided to watch three movies that all owe something to “The Big Chill” and the experience of getting out of town with old buds. We watched “Peter’s Friends” (1992) and its parade of English talent before they were Dr. House and Elinor Dashwood, “Hot Tub Time Machine” (2010) and its cauldron of camp, and “Joshy” (2016) with its bizarre choice to let improv comedians go wild amid tragedy.