btw. Slovak/Czech language sounds hilarious for Polish speakers and from what I've heard vice versa. These languages are similar but have subtle differences that make me smile, for example the way you say "metricky system" or "maxu" as a case of max. In Polish we probably would say "system metryczny" and "maxa", hope it also sounds funny for you guys.
Well it does, but oddly, the only time I mentioned this to one polish guy, he replied something along "and you guys sound retarded" :- D Well, that was though the only unfriendly polish guy I've met, rest were very nice.
Nah I think we're still do the voiceover in english, it's not big deal and does make good impression imho if done well. I might do only english on my tutorial parts, since I am oddly way more fluent english speaker than slovak, from the time in USA I feel bit more laidback, slovak is too serious language.