I would be watching some HD stuff, particually Football and BBall games and some other TV, but mostly movies
Because you will be mostly watching movies, I'd say go with 2.35:1. Get the biggest one you can get without touching your speakers on the sides. Oh, and let your wife choose a darker colour and offer to paint it on your own free time (unless you're fortunate enough to be able to get someone else to do it).
Rationale? It seems just wrong to go from a huge sized baseball game on hdtv to a significantly smaller 2.35:1 movie that is meant to be larger than life. Besides, wasn't scope not only done to fit more into a scene, but also because our eyes can handle watching a large scope screen because we have good peripheral vision? Anyone feel free to dispute this, I'm probably talking with my head up my arse.
Video: Optoma HD3300, Panamorph UH480, Darbee Darblet, Samsung BD D6700 Blu Ray player, DIY Seymour Centerstage XD 138" Curved Screen
LCR - Tannoy DC12i, Sides - Tannoy IW63, Rears - Tannoy Saturn DC6ti Bookshelf, Ceilings - Tannoy CMS 603DC (TF), Tannoy CMS 601DC (TR), 3 Micro Marty/1 Full Marty DIY subs
Amplification: Emotiva XPA-3, Emotiva XPA-2, Outlaw Audio 7700, 2x Inuke 6000DSP
Receiver: Anthem MRX 720