If you're a fan of live theater productions, book yourself some seats for a play or other stage show at Warsaw Fotoplastikon. Look online for times and prices.
You'll have sightseeing choices galore when visiting Centrum. Warsaw Fotoplastikon is a good place to kick off here, but there are plenty of other interesting attractions to consider. Old Town Square, Royal Castle, and Lazienki Park are near the arts and culture attraction and and will cap off your day nicely.