Regular verbs:
* Jouer: To play (a game, music, etc.)
* Jeter: To throw
* Jurer: To swear (an oath)
Irregular verbs:
* J'ai: I have (from the verb "avoir")
* Je vais: I go (from the verb "aller")
* Je suis: I am (from the verb "être")
Less common verbs:
* Jaser: To chat, to gossip
* Jeûner: To fast
* Juger: To judge
* Joindre: To join, to connect
* Jalousier: To be jealous
Keep in mind that some of these verbs might not be as frequent as others in everyday conversation.