my suggestions in a crowd with students ... as has been said too ... try to chuck in some well known (by covered, samples, films, adverts etc) stuff:
tainted love
shake a tailfeather
do you love me
money
higher and higher
california soul
25 miles
land of 1000 dances
the clapping song
covers like:
soul man - ramsey lewis
midnight hour - little mac
dock of the bay - peggy lee
hard to handle - patti drew
satisfaction - otis redding
add few of rowly's suggestions too. plus a bit of latin etc. plus some more motown.