Call it Must-SI TV. Spanish dialogue turned up recently in NBC’s The West Wing (Rob Lowe, left, spars with a Latino pol) and ER (Sherry Stringfield finds a language barrier led to an overdose). And on Scrubs, Judy Reyes ribs a doc for not speaking the lingo. ”In L.A., one out of every two people speaks Spanish,” notes Scrubs exec producer Bill Lawrence, who swears his scenes en espanol had nothing to do with the Peacock’s new acquisition of the Spanish net Telemundo. ”But you can make it seem like we’re sucking up.”