I'm lookin to play the piano at a retirement home.Any ideas for types of music to play for oldies??

Depends on the age of the retirements, but classical always does well (keep it light), throw in some evergreens and 60-music. If you are living in a patriotic country, then local music will do well as well.
Examples:
- Amazing Grace
- Sound of Music
- Andrew Sisters
- Der Zauberflöte (and other operas)