I also had the entire library of 360 launch and 2 years in. Mass Effect, Gears of War, Halo 3, Bioshock, Oblivion, PGR3, Condemned, GRAW, Dead Rising, Lost Planet, Viva Pinata, Crackdown, Overlord, Blue Dragon, PGR4, Tomb Raider Legends and Anniversary, Naruto Rise of a Ninja, VF5, Assassin's Creed to name a few.
It was an amazing run of great games coming out anywhere.
I never even had a 360 but I can acknowledge what a crazy time 2005 - 2007 was for it. Halo 3's launch was one of the biggest events in gaming up to that point. And then on all consoles that was followed by The Orange Box, Super Mario Galaxy, Mass Effect, and then the new year kicked off by Brawl, Mario Kart Wii, and Grand Theft Auto IV. Hard-hitting game after hard-hitting game.
I didn't even notice the OP went up to 2009. Plenty of good stuff released in 08-09. Bayonetta, Mario Kart Wii, Persona 4, Pokemon Platinum, Klonoa, Rhythm Heaven, Bit Trip Runner, 999, Uncharted 2, Kirby Super Star Ultra, Wario Land Shake It, Mirror's Edge, Vesperia, Valkyria, New Super Mario Bros. Wii, Street Fighter IV, Tekken 6, Metal Gear Solid 4, LittleBigPlanet... In retrospect last gen on home consoles isn't my favourite since there was a definite turning point where things started to get a bit ehhh for me, but those first few years paired with the end of the prior gen was strong as
fuck. I'm barely even bringing the DS into the equation because there was an embarrassing amount of great stuff for it that I don't think I could even fit into one post. It's easy to shit on things like motion controls, touch, and the rhythm explosion in retrospect, but at the time, it was massive, revolutionary, and such a blast to be going through all that crazy new stuff in such a short time. It was an exciting time for the industry and one of the only gens where every single console did extremely well. Absolutely no way can you describe that as dull.
I'm curious as to what the OP finds so amazing about 2003 and 2010.
2010 actually was pretty good but 2003 was kinda blah.