He can't help himself, or he doesn't want to. Notoriously hot-tempered Twitter-fight addict Alec Baldwin, who has sworn off the service, the city, and public life multiple times, got into it again over basically nothing today, quickly resorting to his default tactic: questioning his opponent's manliness in a way that could be construed as homophobic."You're on your knees in that photo," Baldwin tweeted at former Mitt Romney aide Garrett Jackson, after a derisive mention of working in fashion. "What's up with that, Garrett?" It all started with a tweet by Baldwin endorsing a documentary about the Keystone pipeline and a...