Dr. Horrible Sing Along Blog
There are 3 Acts with 2 parts in youtube.
View Act 1, Part 1 at Youtube or check the uploader's channel.
It was written by writer/director Joss Whedon, writer Zack Whedon, composer Jed Whedon and actress Maurissa Tancharoen. Check the wiki.
The music is fun and catchy. On the whole, it will give you the laughs.
It stars Neil Patrick Harris as Dr. Horrible. You'll know him as the face of Barney Stinson of "How I Met Your Mother" or Doogie Howser, M.D.
You'll see Felicia Day as Penny. She's Codex of the web series "The Guild."
Also, there's Nathan Fillion as Captain Hammer, the arch-nemesis of Dr. Horrible. Nathan Fillion is Caleb in Buffy the Vampire Slayer and the voice of Steve Trevor in the upcoming Wonder Woman movie.
Lastly, you'll see Simon Helberg as Moist. He is Howard Wolowitz in Big Bang Theory.
The Guild (So far, it has 3 seasons)
A web series that you can watch, for free, in the net.
MMORPG players out there, this you can relate to. On the non-gamers, you'll also get a laugh out of it. I'm sure you have friends who play MMORPG or, at least, net games. I just started watching it so I don't know how to make much of an introduction, so, check the wiki.