Wasn't there a pilot too?
I just started watching this on Netflix with MY kids, and the S1E1 episode doesn't seem like it's the first one. I remember an episode where the 3 friends meet and no one knows each other's identity yet.
There's a scene where Iceman and Firestar are both shaking hands with Spidey, and he's chilling him while she's warming him; Spidey thinks he has a fever or something. Then later they decide to move into Aunt May's together and setup the 'spidey lab' and escape route, etc.
Anyone else remember this?