So does anyone here has any experience of those productions?
Well, I am in
the first "Starship Exeter". Literally "phoned in" my part. (Actually, I mean it was filmed here in Australia and posted to Jimm Johnson.) I'm biased, but I love the way it fondly lampoons every TOS cliche, except Kirk getting the girl.
The link mainly has the director's commentary versions, but I believe the regular sections are on Youtube as well. Jimm has allowed the official site to lapse, but the sections are also available as free video podcasts from iTunes.
TOS Senator Therin
by Therin of Andor
, on Flickr
The second episode still lacks an ending, trapped in a loop of post-production, but supposedly coming realsoonnow.