I've been using Focus Sash Alakazam lately, and I can see why PK moved Alakazam up to A-Rank. He puts so much offensive pressure on teams it's not even funny, out speeding half the tier and packing a lot of power is something that most people should fear. With a Focus Sash, it basically makes him one of the greatest revenge killers in the tier, and lets him take at least two free hits before going down. As long as Zam is still around, sweepers such as Scizor and Lucario will never be able to get that far, due to Zam's Focus Sash he can take a free priority move and deal back the pain with HP Fire or Focus Blast. It's so useful to be able to out speed dangerous things such as Starmie, Terrakion, and Latios, while not having to worry about going down in one hit. Seriously though, people need to use Alakazam more often. He's defnitely not fit for every team, but if you need a revenge killer with access to a Psychic type move and great coverage, then Alakazam is about as good as it gets.