There's a new branch of Alley Cat pizza near Yongkang Street - it's just to the west, the next street over from Yongkang, and only a little south of Xinyi Road. There's only a very small sign to distinguish it but it's a full Alley Cat's (unlike the one at Ximending) with all the pizza choices plus their homemade tiramisu!
Woohoo! The only reason we didn't go to Alley Cat more often was that the Songren Rd. and Zhishan branches are too far, and Ximending isn't a full service branch.