I've seen the one tail (Gaara) and the two tail (some random chick Hidan killed). I don't really remember any others except Naruto =p From an earlier episode, It looks as though Akatsuki has captured a few others.
Haha, the rapper, that guy makes me laugh. Yeha the only ones that shoed up in the anime are the one-tail Gaara, the two-tails chick, the eight-tails rapper and the nine-tails Naruto. I have an image with all of them together (don't know if they're the real jinchuurikis). I also believe they only need the last two bijus, the ight and the nine tails, they have the others already. You can only see the eight tails if you read the manga at the moment, the rapper hasn't showed up in the anime yet (and there are still a good bunch of episodes to go until it shows up).
older had more experience with it, different type of seal maby, and his biju could like him better that narutos dose
1 tailed beast was gaara, 2 tailed was a girl, 3 tails was a fish of some sort and the others except for the 8 and nine tails have already been captured... (i think)
the three tails has been shown in episode 98-100 i think but its like a fish which gets drawn out by a massive chakra