There's a new free app in the iTune's store, going by the brilliant name of Space Deadbeef. It's a 2D horizontal shmup where you touch the screen to move your ship and lock-on to targets and launch a suitably Ichiro Itano inspired volley of missiles. There's a video of the game in action here.
I'm mentioning this as the man who made this is Yuji Yasuhara. To those that don't know, he was also the design and code lead on the frankly ****ing stunning Omega Boost, which has Itano Circus missile barrages up the wazoo. He also worked on Panzer Dragoon Zwei, so if anything this guy knows how to get a homing missile shooter working.
Personally, I'm glad that he's doing shmups again and hope that his current employers take notice of his renewed shmup prowess.