An anime fan on 2ch dug up or created a chart showing which series made up the spring anime season 10 years ago:

Azumanga Daioh, Denkou Chou Tokkyuu Hikarian, Cheeky Angel, Tokyo Underground, Tokyo Mew Mew, Bakutou Sengen Daigandaa, .hack//Sign, Pitaten, Forza! Hidemaru, Full Moon wo Sagashite, Rockman Exe, Mirumo de Pon!, Ai yori Aoshi, Digimon Frontier, Tenchi Muyo! GXP, Chobits, Atashin'chi, The Twelve Kingdoms, Jing: King of Bandits, Happy Lesson, Rizelmine, Wild 7, Magical Shopping Arcade Abenobashi, Psychic Academy, Whistle!, Gun Frontier, Gate Keepers 21
Any happy memories? How do you think it stacks up with this season?
