I just posted my review for Syphon Filter: Dark Mirror for the PSP.  Dark Mirror in my view is the best PSP game out there in terms of content and technical features.  The game simply is a lot of fun to play and looks amazing.  I'm a big fan of Syphon Filter since it was released on the PS1 so its nice to see the series back on track.  I will probaly add more to my review the more I play but for the time being check it out and I hope everyone likes it and recommend the review if you like it.  Thanks.