1. When Neil needed someone to lean on and Bill was right there for him.
2. When Bill explained what he and Neil do when they hang out.
3. When Bill tackled Neil onstage during a panel.
4. When they spent Thanksgiving together and even took a Turkey Day selfie.
5. AND OF COURSE: When they took a selfie with the president.
6. But even better was how Neil and told the story of the presidential selfie ...
7. And how Bill saved the day when Neil's phone failed to capture the pic.
8. EVEN CUTER THAN THAT (I know, you didn't think it possible), is when Bill did an impression of Neil prepping for that presidential selfie:
9. When Neil and Bill had cameos on the show Stargate and they joke about the band Flock of Seagulls.
View this video on YouTube
Even though they're wearing space-themed neckwear!
10. When Bill taught Neil how to knot a bow tie. And they were so happy to be so dapper together.
Last night in midtown Manhattan, Bill Nye @TheScienceGuy teaches me to knot my first-ever Bow Tie.
11. When they drank pink beverages from plastic cups with 30 Rock's Scott Adsit.
12. And when they partied and really let loose:
13. When Bill was asked whether he or Neil would win in a fight and he and offered this response:
14. When Neil was giving a talk at Florida State University and decided to call his buddy Bill in front of the audience for some extra insight.
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And had adorable technical difficulties with speakerphone.
15. And when Bill joked about how he and Neil are planning a run for office in 2016.
