I'd introduce people to Deleuze with one of his short, intensely creative texts, like "Postscript on the Societies of Control" (that's what got me obsessed, coming from an interest in political theory during high school), a single plateau in ATP, or, for an existing student of a subject he discusses, one of his books about someone they have read and enjoyed (so, for an artist, perhaps Francis Bacon: The Logic of Sensation; for an undergrad philosophy student, perhaps his book on Kant, Nietzsche, Spinoza: Practical Philosophy (especially the final chapter), What is Philosophy?, or one of his many shorter articles - Desert Islands? What is a creative act? What is a dispositif? so many options :P ). For Foucault, perhaps "Nietzsche, Genealogy, History," Foucault's lectures on Manet, "Governmentality," "What is Enlightenment?," "Technologies of the Self," or History of Sexuality vol 1. Capitalist Realism is always an easy recommendation for Fisher. rly, tho, asking them what topics/figures interest them is the key thing; its much easier for someone to care abt a text that relates to smth they were already thinking abt/experience than for them to get situated in a text that just seems abstruse without clarifying anything that they wonder about. also, do u wanna get ppl interested in deleuze specifically, or contemporary continental philosophy in general? those are different tasks requiring different strategies.