Lovely, but Grieg's concerto is in A minor, and Beethoven's is in G MAJOR! Jeeze, the things I have to put up with. Won't you two grow up?
Well, ok, I'll list a few of my current favorite concerti to get you moving as well...there's some overlap with elf's...
Beethoven: 3, 4
Rachmaninoff: 1, 4
Liszt: 2, Totentanz, Hungarian Fantasy
Franck: Variations Symphoniques
Medtner: 2, 3
Bartok: 2, 3
Lyapunov: 2, Fantasy on Ukranian Themes
Saint-Saens: 1, 3, 4, African Fantasy
Busoni: One and Only
Dreyschock: Only one I know about
Shchedrin: 2, 3
Ratuavaara: 1, 2
Then there are the concerti of Ligeti, Bolcom, Schoenberg, Liebermann, Xenakis, and so forth, for contemporary works (that includes Shchedrin and Ratuavaara too, by the way). But the above list should get you going, anyway. Those are only the ones that pop to mind immediately as being particular favorites, so there are plenty others!
One should either be a work of art, or wear a work of art.
You know, some people just have natural talents-like some people play the piano but aren't very tall.