Hydromorphone = Dilaudid
Oxycodone = Oxycontin, Roxicodone, etc.
Oxymorphone = Numorphan
Propoxyphene = Darvon
Methadone = Dolophine, etc.
Meperidine = Demerol
Lots others (both full agonist,partial agonists, and mixed agonist-antagonist). Anything with a -cet has Tylenol in it.