The best replacement for charmed is buffy.

The best alternatives to charmed are rated as following:
★★★★★  buffy
★★★★  supernatural
★  bewitched
★  buffy the vampire slayer
★  smallville
  buffy vampire slayer
  desperate housewives

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Speaking about charmed, one probably shouldn't forget about alyssa milano.

Other search terms related to charmed and their ratings are:
★★★★★ alyssa milano
★ phoebe
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charmed
buffy
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