I like my cladding on the 94 and the 03. The GXP'* is very nice too. I remember reading an auto magazine'* review of the GXP not too long ago. One of the things they said was that they liked how Pontiac got rid of the cladding.
Many critics of the cladding argue that it makes the cars look cheap. I don't fully agree. I think GM used cladding mostly to make the cars stand out (as others have already stated). Pontiac IS "driving excitement" as we all know. The aggressive styling is part of that. And maybe the cladding is also cheaper to produce than making the same body lines and ridges in the metal itself. Either way, I like the aggressive styling/cladding of the Bonnevilles (SSE/SSEi, most SLEs) and most other GM cars like the GA GT, and the 94-95 Grand Prixs.
I also don't have anything against Nissans, Infinitis, Audis, BMWs, and other imports that don't have cladding. They demonstrate that the lack of cladding can still be aggressive and unique. The cleaner look of no cladding is nice also.