Regarding including your logo in your line. (UPDATED)
I love the Illy line "live happILLY" which includes their logo in their creative line. I can remember another instance when this happened with the Kiri spread cheese "ta3m ya2khoz koull tafKIRI" (a taste that steals my mind!)... I am sure there are other instances where the selling line or slogan had the logo incorporated in it. I love this technique.
UPDATE: I knew there was one I missed, an obvious one, so here it is - Fairy the washing liquid with its line "tawFAIRY" (the one that is more economical!)