Just like Boxee, Verizon's rolled out a February 14th update to users with the FiOS DVR Manager for iPhone, who might actually be on Verizon for their phones now too. It adds support for controlling multiple DVRs, a refreshed UI to match the latest version 1.9 on set-top boxes, access for non-DVR users, and a "What's Hot" feature showing what others in your area are watching. Our friend Dave Zatz has already gone hands-on with the new version 1.5.0 and reports an improved experience with a smoother login process to boot, although he noted it could still improve by integrating itself into the remote control app that's also available.
Verizon FiOS DVR Manager for iPhone version 1.5.0