Before the awkward refreshments at Cloud City, Han attempted to deal with Vader like he would against a Cairo Swordsman. Another one of Vaders finest moments, as a kid I remember thinking "Wow, this guy really is unstoppable!"
How was he able to deflect the shots? I always used to think it was just a force power, but were they just thumping into his cybernetics? Surely he would have still felt them? I can't believe his gloves to have been made of some kind of laser-proof kevlar?