Originally posted by: Jeeebus
Passing on the right is illegal and you can get a ticket for it. Thus, if there is someone moving too slow in the left lane, I usually just pull a pit maneuver and calmly chuckle to myself at the twisted metal as I proceed to legally pass in the left lane.
Actually, it's NOT illegal in most states, provided you're doing it on a multi-lane highway or multilane street.
California, for example, prohibits passing on right EXCEPT for these instances:
California Vehicle Code, Division 11, Chapter 3, Article 3, Section 21754:
21754. The driver of a motor vehicle may overtake and pass to the right of another vehicle only under the following conditions:
(a) When the vehicle overtaken is making or about to make a left turn.
(b) Upon a highway within a business or residence district with unobstructed pavement of sufficient width for two or more lines of moving vehicles in the direction of travel.
(c) Upon any highway outside of a business or residence district with unobstructed pavement of sufficient width and clearly marked for two or more lines of moving traffic in the direction of travel.
(d) Upon a one-way street.
(e) Upon a highway divided into two roadways where traffic is restricted to one direction upon each of such roadways.
http://www.dmv.ca.gov/pubs/vctop/d11/vc21754.htm
Most other states, if not all, have similar provisions. So, passing on right in the case the OP presented, is probably legal, alright, and will not get him a ticket.