Maybe I'm crazy, but I really like Hourglass. If you're unprepared for it, whoops, there goes the rest of your turn! I love to throw it in front of a Heimdall 2.0 for brain damage fun. Either that or slap it down before a Tollbooth to drain the Runner's code-gate breaking resources and then laugh as they bounce off the 'Booth.
Needless to say, I think that Heinlen Grid compliments it really well. Also, it helps vs. Rachel Beckman.
EDIT: Hadn't thought about Komainu out-of-faction, really. I might have to try that!