1)
Why does it say here, "u'Shakah Li" and (in the next verse) "va'Yishak Lo" (27:27)? When Esav kissed Yaakov (33:4), it says "va'Yishakehu"!
1.
Ha'amek Davar: Here Yitzchak commanded that they kiss each other, to arouse love, even though normally one does not kiss his father due to fear, and a slave does not kiss his master (this is why below, Esav kissed Yaakov, and not vice-versa).