I've been playing around with the new (well, new-ish) Minecraft resource pack format and made a pack that turns all testificates into Sjin--complete with replacing all testificate sounds with Sjin's voice. Because why not, eh?
Download the pack here (mediafire link) IMPORTANT UPDATE!!! Mojang changed the name of the folder sounds are drawn from, so this pack won't work in Minecraft 1.7+ unless you download... the new version hahaha download it here (still a mediafire link). If you want a version that works pre-1.7, use the first link.
Simply download, place into your Minecraft resource pack folder, and enjoy watching Sjins run around oohing and opening and closing doors. Just like the real Sjin!
This pack was designed with the upcoming updates to resource packs in mind, that allow you to have more than one pack applied at a time. That way you can have, say, Faithful or Sphax or OCD or whatever applied but still enjoy having Sjins frolicking around your world! (Note: the pack is 100% compatible with the current Minecraft, it just means that everything other than Sjin will be the default texture pack.
Just listen what people have to say:
"sjin testificates r00l" - thesmutlord
"really really kawaii and mildly sexual" - syncrasis
"i tried to drown myself" - ridgedog