HTML isn't a programming language, nor are batch files really (IMO).
I'd say though HTML/CSS, batch stuffs, a bit of Visual Basic, a bit of BASIC, and also a tiny bit of VBScript, Javascript and C++
really though, i don't know any of the proper languages well at all, but I do understand most of them. Just a lack of motivation really. So yeah.... nothing really well, except arguably HTML, but enough to get by if I'm forced into something for most of those (as long as I keep some reference material handy).