17: One working with Linux, e.g.
19: Animal with twisted horns
20: They've broken with the past
24: Fat on the bird feeder
25: Ending of many WWW addresses
27: Hazarding a guess: doctor who puts stomach muscles in pulleys?
41: Tenth wedding anniversary gift
44: Between Earth and Venus, e.g.
62: Symbol of stubbornness
66: Reminiscent of an oboe
68: Section in the credits