I've never flown Allegiant before, but the stupidity or lack of attention to detail of one of their pilots caused a 25 minute delay for me last night at LAX. I landed at LAX from SFO on United. We taxied from the north complex to Terminal 7 on the south complex. United has the wonderful Channel 9 so you can hear communications between ATC and the aircraft. As we exited the runway and transfered from the LAX tower to ground control, you could hear a frustrated ground control operator giving instructions to Allegiant 451 from Medford, OR to taxi to a Terminal 6 gate via a certain route. Unfortunately, the pilot was not listening carefully and not only failed to repeat the taxi instructions carefully (despite 3 corrections from the ground operator), but also taxied to the wrong side of Terminal 6 and shut down the aircraft's engines, which in effect blocked the alley between Terminal 6 and Terminal 7. For whatever reason, the Allegiant plane refused to restart its engines and instead tried in vain to get a "tow" to the other side of Terminal 6. Moreover, when the ground controller informed the Allegiant pilot of the error, the pilot responded with a very rude attitude. In any event, planes bound for Terminal 7 and part of Terminal 6 were stacked up on the taxiway for 25 mintues before the situation was resolved. I don't know about you, but if the pilot can't follow simple directions and take the plane to the correct gate, I don't want him/her at the controls in the air. Thanks Alligant for wasting 25 minutes of my time.