Screen Grabs chronicles the uses (and misuses) of real-world gadgets in today’s movies and TV. Send in your sightings (with screen grab!) to screengrabs at engadget dt com . Dell’s product placement deal with CBS apparently doesn’t stipulate whether its gadgets will be used for good or evil, as illustrated by their cameo appearances on the network’s NCIS:LA crime drama. In last night’s episode, lead do-gooder Special Agent Callen is seen preparing a Streak tabletphone for some audio recording action before a meeting with the baddies — who in turn whip out an Adamo XPS (yes, it’s still alive !) to seal a deal for some ultra-advanced weaponry. Yep, it’s a non-stop clich