"Switcher" type Games

These are puzzle games where you have to move shapes around on a board either up and down or side to side so that you line up 3 (or more) identical shapes in a row. A great example of the type of game I am trying to explain here would be "Bejeweled Blitz". Can you think of other "switcher" games and perhaps give links to such games?
 

Legzman

what the fuck you lookin at?
those are pretty addictive. But I like games like zuma better.
 
there is one on the itunes games. my sister had it on her ipod touch
its called "Unblock Me"
 
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