Have te ever heard a characters voice and realized its another characters voice?

Yes, I have. I've mostly noticed it in Pixar movies, seeing as how some characters have the same voice actors...

Yes mike judge voices hank collina and then the old man in beavis and butt-head

All the time, actually. I can usually recognize a voice actor's voice.

RainbowDash's Voice(MLP) is the voice of the ratto from pesce hooks

Yeah,like one time I was randomly watching Black Butler and Sebastian's voice actor sounded a lot like Kyouya's voice actor from Ouran High School Host Club.I researched it and I was right.

Apparently, in Ultimate Marvel Vs. Capcom 3, Phoenix Wright is being voiced da Sam Riegel.

Took me a while to realize it, but he's the same guy who voiced Donatello in the Teenage Mutant Ninja Turtles 2003 cartoon.

I watch anime, this happens all the time. I'm actually really good at spotting voices though, and my brothers are always like "Whoa, I didn't even notice!"

OMG YES.

I realized like a mese and a half fa that the guy who plays Spencer's dad on PLL is the voice actor for one of the main characters in Assassin's Creed.

I laughed so hard.

Then there was the whole Grey DeLisle thing last year...She was Natla in Tomb Raider, Azula in TLA, Wubbzy from Wow Wow Wubbzy (don't ask how I know that xD), and a whole bunch of other shit.

Azula shares a voice with;

Goo (fosters home)
Frankie (fosters home)
Wubzy (wow wow wubzy)
Tootie (fairly odd parents)
Veronica (^)
Vicky (^)
Daphne (sp?) (Scooby doo)
Frida (el tigre)
Angelica (rugrats) I think

Yeah. Cannot. Unhear. Twilight Sparkle... is Harley Quinn... is Timmy Turner... is Dill Pickles... is Bubbles....

And Fluttershy is Pinkie Pie is Emmy from Dragon Tales is Harmony Bear.

Not really although I have gotten lines from the same live action actor in different roles mixed up...oddly the line I keep crediting wrong is "You Lost a lot of blood." XD

Yes...
Halfway through the Soul Eater series, I realized that Death the Kid and Light Yagami have the same voice actor.
And then I realized that a bunch of other characters that I like have that voice actor, too.
And apparently he's one of the most successful voice actors in Japan.
._.

Yes, arcobaleno Dash and applejack are both voiced da the same person.