Yes there is a bunch of them, apps, plugins, etc.
I use Get Lyrical and it's been wonderful to even find foreign languages lyrics (which I listen to a lot: French, Japanese, German, Spanish...).
It works effortlessly: just select a bunch of tracks on iTunes that you want GL to fill the lyrics for, then open GL and choose "tag selection" and let it do its magic. that easy. Enjoy!
awesome. thanks very much. i used to use the lyrics dashboard widget that would automatically show the lyrics to the currently playing song, but lately it has just not been finding anything, so biseinen with get lyrical to the rescue!
Does anyone know what happened to the musiXmatch lyrics app for mac? I have it in my purchased list in the mac app store but I can't find the app page for it anymore?