* Pretty Woman (1990): This is their most famous collaboration, a romantic comedy about a Hollywood prostitute and a wealthy businessman who fall in love.
* Runaway Bride (1999): This is a romantic comedy about a woman who has a history of leaving men at the altar, and the reporter who tries to figure out why.
* Sleeping with the Enemy (1991): This is a thriller about a woman who fakes her own death to escape from her abusive husband.
It's worth noting that they are not actually in any scenes together in "Sleeping with the Enemy". Gere plays the abusive husband, while Roberts plays his wife who is trying to escape him.