Many argue with me when i say that Jiraiya is under-rated. Yes i know he is a sannin and obviously demands some respect, but I would put J-man in the top ten honestly. People only look at a couple of Jiraiyas attacks, but some of his moves that are overlooked are some of the craziest most over-powered moves of all time.
Hair ninjutsu: Jiraiya has already shown us in part one that Needle Jizo is a fantastic defense. He can seemingly do it without handsigns. What i didn't know was the volume to which he could manipulate his hair. He grabbed pain from several meters away. He can make hair senbon needles which he calls his fasted long range attack. Also, this move required no hand-signs.
Shadow Hiding technique: Although this move is supplementary and not an attack, hiding in someones shadow is a crazy useful ninjutsu move.
Dark swamp: On 45% power, jiraiya was able to INSTANTLY summon a gigantic swamp big enough to take down a large summon (3 giant snakes). This isn't a technique that can easily be escaped from and can be used in small areas like when jman placed a patch of it on the ceiling during the pain fight
Toad mouth techniques: Jiraiya has already demonstrated that he can hide himself in a small toad that can swim underwater. Inside this toad, jiraiyas chakra is hidden, making it potentially as useful as Muu's stealth move. Also, this toad can grab people with its tongue. Jiraiya also has toad mouth bind which in my opinion, is borderline a time space move. He can warp away an entire region (able to take in like 15 of pain dogs from an enormous range) and take them to a place that he has complete control over.
Summonings: Jiraiya has possibly the best summons in naruto history. He can summon the 3 GIANT toads gamabunta, gamaken, and gamahiro, but he can also summon a variety of small toads. While i can't explain why summoning ma and pa took so long (it really was just plot so the jiraiya fight lasted longer so we could see more of his moves), having ma and pa can be a fight ender. Pa has suiton jutsu strong enough to quickly cut in half a large summon from an impressive range. He can also use large scale wind techniques. Ma has a tongue that can grab people AND sense locations of hidden objects. With the combinded toad oil/fire/wind technique, ma and pa are a force to be reckoned with
Sage mode: Personally, i think Jiraiyas sage mode is stronger than narutos. Sure his is imperfect because he has to summon ma and pa, but ma and pa ENHANCE his sage mode and make the transformation last indefinitely. Jiraiya uses some frog features to his advantage (stronger grip on his feet etc). Much like naruto, jiraiya is able to attack with such speed and strenght to render hand to hand combat useless against him. He probably has better move anticipation than someone with the sharingan.
Rasengan: I'm just throwing this out there, but Jiraiya's sage art: Chou Oodama Rasengan, is much bigger than naruto's giant rasengan
Bottom line: Jiraiyas moves are VERY strong, and what makes him a powerful shinobi is that he hand selects moves that would improve his arsenal. He doesn't just pick up moves from his instructors (like naruto and sasuke), but he adapts his own fighting style to strengthen himself. For the record, i believe that jiraiyas moves make him a perfect match for the uchiha. I believe that in sage mode, he can predict and dodge amaterasu (sage mode naruto could dodge the 3rd raikages punch) but even if he COULD'NT, he could use the fire sealing scroll to remove the flames. There i said it. I believe that Jiraiya>Itachi. He could close his eyes and sense itachis movements to avoid tsukyomi (although ma and pa would be effectice at undoing an ORDINARY genjutsu if he needed them to). I believe that sage mode jiraiya could get past amaterasu, and even though itachi's susano'o has the totsuka blade, jiraiya is faster and has unlimited chakra in sage mode and could out last itachi who has piss-poor chakra. Come at me bro