I have a recording of someone saying "Подавайте его мне сюда!". When I heard it, the "г" in "его" is pronounced likely as "v", not "g".
And then I found out that г in "ничего", "приятного" in sentence "Приятного аппетита!" and "хорошего" in "Хорошего дня!" is also pronounced like that -- Looks like it also applies for endings for masculine and neuter adjectives in genitive singular (-ого, -его)...
Is there a special rule about pronouncing г in these cases?