David Alcock keeps us from having to think:
CXPACKET
Attempt to pronounce parallellellellellism correctly then set MAXDOP to 1.
PAGELATCH
Mention TempDB and contention in the same sentence. Delete TempDB
BACKUP_
Delete any long running backup jobs. If wait persists then delete all backup jobs.
Click through for plenty of excellent nuggets of advice which definitely won’t land you on the unemployment line.