First, "wanna" and "gonna" are lazy forms. You will never use these in writing. You've already made extra grammar mistakes just by trying to use them. 1) I want to record some video of you. I guess you have a video camera and want to record the person. Is this what you meant? Or do you mean you want to copy a DVD? 2) I'm going to take a few moments of your time. "I gonna", even in slang, is absolutely wrong. 3) I'm going to talk to you. / I'm going to have a word with you. I'm really not sure of the context of the sentence. 4) Who should I tell? You can actually use "whom" here, if you wanted. 4) Who should I speak with? Yes, this one is correct. (Again, "whom" is an option.) 5) Who do you want to be with? This is one exception where "wanna" might work, but it depends on the context. If you're not sure, use standard English and avoid slang forms completely. One last correction: "Thanks a lot." http://hyperboleandahalf.blogspot.sk/2010/04/alot-is-better-than-you-at-everything.html