This British sci-fi flick charmed nearly everyone who saw it. Alas, too few people saw it. “Attack the Block” came out last May, but apart from making a small splash at SXSW in Austin and getting a very limited North American release, it has relied on word of mouth and DVD/Blu-Ray rentals and sales to find an audience. Thanks to Matt and other Popspotting listeners, you can count us among its fans as well. Written and directed by Joe Cornish, “Attack the Block” stars John Boyega, Jodie Whittaker, Alex Esmail, Franz Drameh, Leeon Jones, Simon Howard and Nick Frost.