http://pokemon151.jp/
The Cubone one was neat, but I'd lean towards the Articuno shirt.
If I can get my hands on one.
Bulbapedia said:The Pokémon Company has announced Pokémon 151, a new brand intended for adult Pokémon fans. An official Web site opens Thursday, and Japanese Pokémon Center stores have begun selling four types of stylized T-shirts. In addition, a Diamond and Pearl battle tournament for ages 15 and up will be held at the Tokyo store July 4.
The four T-shirts currently available for pre-sale feature stylized designs of Hypno, Cubone, Articuno and Mewtwo, respectively.
The Cubone one was neat, but I'd lean towards the Articuno shirt.
If I can get my hands on one.