Well Ginga meets his dad like on episode 45 or 43 either one ,but it definitely on the 40.
He hasn't became the 6th Hokage yet, but he finds out that the 4th Hokage is his dad in Chap 440, he finally meets his dad. Kakashi doesn't tell him at all.
check here:wiki.answers.com/Q/What_episode_does_goten_meet_goku
it starts at episode 81 but im not really sure
it's episode 159 .... pain vs kakashi.................it's the best
Shippuden episode 1
I think its the episode titled "Gotta See Gotta Know...Kakashi Sensei's True Face" I also like the 3rd episode where Naruto, Sasuke, and Sakura tried to get Kakashi's bells. Or if your talking about shippuden...Kakashi Gaiden is great! In case you have not figured it out...I Love Kakashi!! ;)
Kakashi has a normal face and resembles his dad in appearance .
His dad killed himself- he committed suicide.
I believe it is episode 4
Episode 191 shipunden
Phoebe meets her biological dad in The One with Joey's Bag (season 5 episode 13)