A (dis)honorable mention here for former World Champion, Lewis Hamilton.
2013 Malaysian Grand Prix (Lewis Hamilton)
Having recently made the switch from McLaren to Mercedes ahead of the 2013 season, Lewis Hamilton completely forgot his new found loyalties when he turned in to the pit lane. The search for fresh tyres in the 8th lap started at the McLaren pit, where his former pit crew was ready for his former teammate, Jenson Button.
Quickly realizing his mistake, he went through and found the right corner. Hamilton was lucky at least, because the Mercedes pit was further away from McLaren pit, otherwise he would have had to lap again to get his set of tyres in. Similarly, Jaime Alguersuari found the wrong pit in the 2009 Abu Dhabi GP, when he mistook the Red Bull crew for his Toro Rosso.