What are some marketing campaigns/strategies that have always stuck with you?

Hey Product Hunt community! 👋 Short introduction, but my name is Joel Sitanggang, and I am an up-and-coming marketing manager and strategist! I've been working with WoafMeow to create an AI-powered pet health app that helps pet owners keep a close eye on their furry friends' well-being that would be launching on Product Hunt soon (exciting stuff!). To better involve myself within the community, I am asking my favorite question of all time to ask other creatives: what marketing campaigns struck with you the most? From successful music marketing campaigns like BRAT to more niche campaigns such as the "I Love Bees" Halo 2 ARG campaign, what are some marketing feats that you have always admired and why? I love picking apart marketing campaigns to see the gears at work, so give me your best shot Product Hunt Community :)