We can feel your apprehension about the leather jacket. Embraced as it is by biker gangs, fighter pilots, and their countless imitators, leather has always carried an air of borrowed machismo. But that's changing. Designers are making jackets that go light on the brass fixtures and tough-guy accents and appear contemporary without trying too hard. Don't worry: The new versions still have an edge, but they're streamlined, so when you put one on, you won't look like you're heading to your next bar fight. Whether you go biker or bomber, these are the jackets to wear now.