I've been asked to play for church and am at a loss for what to play. Ideas?

Kind of a stupid question. I am clically trained...played for churches, orchestras, majored in piano in college. I just haven't played much in a few years...all of my clical is way too 'showy' and too difficult to work up in a week or two (not to mention way too long) ...I usually do my own hymn arrangements....however, this is a more 'charasmatic' church and I need something a little more upbeat. Ideas on some easy clical that sound hard, or some arrangements of contemporary worship? Every one has talked me up and now I don't want to play at all...I hate playing solo, I'd rather play with a group. Anyway, guess I better get it over with. =) Ideas? To give you an idea of my level...in college I played Schumann's a min. Concerto, many Beethoven Sonatas, Chopin Etudes...the usual. I can play by chords, read chord charts. I just haven't played much in a few years...and don't want to put forth the work to get my clical back in gear (at least not in the next few weeks).