The same Iizuka behind Sonic Colours and Sonic Generation?
He's kicking arse that's what he's doing. =)
He also has made some significant mistakes.
You'd be suprised at how many of those 'mistakes' weren't actually his.
Whilst he has been involved with Sonic games since the beginning and has been attached to most of the games the biggest offenders out there are the ones hes had least involvment with...
Sonic the Hedgehog (2006) — Special Thanks
Sonic Riders: Zero Gravity (2008) — Recording Coordinator
Sega Superstars Tennis (2008) — Special Thanks
Sonic Unleashed (Xbox 360 & PS3 Version) (2008) — Level Design Special Thanks
Sonic Chronicles: The Dark Brotherhood (2008) — Sonic Character Supervisor
Sonic and the Secret Rings (2007) — Special Thanks
Sonic Riders (2006) — Recording Coordinator
His biggest blunder ever was Shadow the Hedgehog... But I have a feeling he was pressured into making that by the money men who saw how popular the character was. But the games that really hurt the Sonic series most had little to do with him.
Of course NiGHTS JoD is all his fault and that was a shitty move but in all honesty hes probably done far more then good in his entire time in Sonic Team and lately he has been taking some big steps in improving the series, big time.
I personally like him... Then again I like Tony Blair, Tom from Tom&Jerry and Richard Nixon... I like being the devils advocate.