Rosie O’Donnell has always been one of Broadway’s biggest boosters. Now she’s putting her own money behind her words. “Taboo,” a new musical with songs by the 1980’s pop star Boy George, is being backed by O’Donnell, who is putting up $10 million of her fortune to produce it. “While that alone would make her involvement remarkable — most shows on Broadway get their money from dozens of smaller investors — Ms. O’Donnell has also taken the risky step of casting herself as the principal draw for ‘Taboo,’ using her brassy image and her reputation as an arbiter of suburban taste to lure audiences.”