[tlb]

Command-option-shift-V in Safari. A real finger-twister.

[msbarnett]

You can remap “paste-and-match-style” to command-v globally, thankfully.

[ianferrel]

Unfortunately if you do so it will break Cmd-V paste on applications that don't have that feature.

[egypturnash]

cmd-opt-shift-v works on any well-behaved OSX application, not just in Safari.