It took a while to brag about it,but..
So far,I have the following games:
As for the unit itself,the opening(when you turn on the unit in most instances)and settings menus are multilingual(including Japanese),even though the keyboard didn't include a Japanese hiragana option(because user handles for wireless Internet gaming don't support non-English characters).The games utilize the Universal Media Disc(UMD)format,and the PSP can also play UMD audio and video.The North American units come with accesory packs including(besides the essental AC charger and battery pack)a storage pouch,a 32 MB Memory Stick Duo,stereo headphones with remote control,cleaning cloth,demo disk(with game trailers,movie previews,and music videos),and(for a limited time)the full-length Spiderman 2 movie on DVD.As for the latter movie(the first real movie I've watched in ages),it was rather dark,even though I haven't seen the original...
As for similarities between it and the Nintendo DS,you can set the date and time(including timezone for the PSP)in both systems.Though I already have more PSP games than DS games(4 to 3),I intend for the systems to be complementary.I seriously hope that Nintendo isn't shooting itself in the foot...
BTW,in the upcoming gridiron-football themed anime Eyeshield 21(Kappei-sama's newest voice project),at least 2 of his castmates(namely Miyu Irino and Aya Hirano)are young enough to be his children,though his oldest son is younger than either of them...
Finally,as you can tell from my user icon in this post,I've finally received my matcha KitKats and have already tried out a pack of them.The green tea flavoring actually blends well with the white chocolate.Speaking of Japanese KitKats,I recently ordered 4 "Hokkaido milk"-flavored single packs from an eBay Buy It Now listing and have already received them.Though I haven't tried these yet,how are they different from the regular white chocolate ones?