We have all seen the MAC vs. PC commercials - it's like a war! Microsoft begun fighting back, then Apple fights back, and so it will probably go on for years to come.
With SUSE 10, Novel made professional Linux commercials (and did a really good job), but recently I learned that Novel joined the MAC vs. PC war, sending Linux into the battle. The war has even spread to SouthPark. Below you can see the first two MAC vs. PC vs. LINUX commercials from Novel.