Visit Money Saving Mom for some great scenarios for CVS deals.
For example, here is one deal she posted:
Buy 1 Tylenol Arthritis or 8-Hour (20-24-count) at $3.99, Get $3 ECBs (Limit 3)
Use $2/1 coupon from the 5/17 RedPlum insert (or $1/1 printables here and here)
Free plus overage after coupon and ECBs