[Zekramcross]

Try these out since I play these to most:
Shihori - Bamboo Dance
Shihori - Magic Girl !!
Shihori - Bloody Night
S.S.H - Intersect Thunderbolt
sakuzyo feat. Hastune Miku - Chain De/struction
Sakaue Nachi - Crazy Hot
paraoka - Manima ni
IOSYS - Cirno's Perfect Math Class
IOSYS - Border of Extacy
IOSYS - Power of Dream
IOSYS - Hatate's Bakkoi Murder Case
Demetori - Emotional Skyscraper ~ World's End
Demetori - Solar Sect of Mystic Wisdom ~ Nuclear Fusion
ALTIMA - Burst the Gravity (TV Size)
Hatsune Miku - FREELY TOMORROW
Hatusne Miku - Cruel Clocks
May'n - Chase the World (TV Size)
Memme - BSPower Explosion
paraoka - monolithize phases
Renard - Blue Night
t+pazolite - Chipscape
TAMUSIC - Mystic Oriental Dream ~ Ancient Temple
Tatsh - Lunatic Tears... (Tatsh Remix)
Team Nekokan - Can't Defeat Airman
ZUN - Hartmann's Youkai Girl
ZUN - Phantom Ensemble
ZUN - Year-Round Absorbed Curiousity
ZUN - ZUN Nonstop Medley

All these are fun to play, imo.