JSRF, Phantom Dust, Otogi 1 and 2, Halo, Double s.t.e.a.l and a couple others.

You don't own Metal Wolf Chaos?

Bought a few thanks to backwards compatibility.
Conker
First three Splinter Cells
Halo 1 and 2
Brute Force (aka shit)
Bloodrayne 2
Shenmue 2
Dream fall
Jade E!pure

Possibly a couple more

Not sure I can remember then all, but off the top of my head:

Grand Theft Auto Double Pack
KOTOR
Mech Assault
Alter Echo
Ninja Gaiden
Mortal Kombat Deception
Midway Arcade Classics II
Sudeki
Fable
American McGee's Scrapland
Jade Empire
Castlevania: Curse of Darkness
Sphynx and the Cursed Mummy

There might be a few more.

I still own;

Kotor 1 & 2
Morrowind
Jade Empire
Ninja Gaiden Black
Two Worlds

and have the Fable and Halo:CE upgrades. Next question?

Woops. TW was 360 obviously. Pretty damn annoying I can't edit through the X1 browser. No cookies no flash player upgrades. Kinda blows.

Halo 2
Doom 3
Half-Life 2

I have this, but with the 'upgraded' texture pack. For research.

I went for PlayStation that gen, so none.

Metal gear solid 2

Silent hill 2, 4

Otogi 1, 2

blinx

Genma onimusha

DOA volleyball

Timesplitters 2

Capcom vs snk 2

Breakdown

Shadow of memories

Kingdomhearts heroes

And splintter cell to softmod the console