All following games use 640*256 resolution:
Floor 13
Renegade Legion Interceptor
Spaceward Ho!
Fireteam 2200
Hannibal
Canton
Atrophy
Also according to HOL notes, Overdrive (Infacto) uses Hires in some screens, as well as HAM and EHB modes.
http://hol.abime.net/5168
Also some games have hi-res "status panels" that display stuff like score and lives, even if the actual game screen is lo-res. Agony, Apidya and Overkill use this technique.
And also intro and logo screens in many games are hi-res, even if the games are lo-res. Some Team 17 and Psygnosis games show the company logo in hi-res, and this is quite common in many other games too. For example Factor 5 logo in Turrican 3 uses 640*256 and Banshee has a 640*512 loading screen.
Also most stuff released for the later generation "Super Amigas" are often hi-res, or at least have hi-res as an option.