The following list are the talks I loved, am very curious about or plan on watching because I heard they were amaze-balls (in no particular order).
Keynote – Jacob Kaplan-Moss – Pycon 2015
Keynote – Gabriella Coleman – PyCon 2015
Julia Evans – Systems programming as a swiss army knife – PyCon 2015
David Beazley – Python Concurrency From the Ground Up: LIVE! – PyCon 2015
Allison Kaptur – Exploring is never boring: understanding CPython without reading the code
Type Hints – Guido van Rossum – PyCon 2015
Curtis Lassam – Hash Functions and You: Partners in Freedom – PyCon 2015
Sasha Laundy – Your Brain’s API: Giving and Getting Technical Help – PyCon 2015
Brandon Rhodes – Pandas From The Ground Up – PyCon 2015
Kate Heddleston – How our engineering environments are killing diversity (and how we can fix it).
Amy Hanlon – Investigating Python Wats – PyCon 2015
Raymond Hettinger – Beyond PEP 8 — Best practices for beautiful intelligible code – PyCon 2015
Brett Slatkin – How to Be More Effective with Functions – PyCon 2015