Here are some additions to previous posts in my Publication Peculiarities series.
As another meta-title, to add to those in Publication Peculiarities: Papers, I offer
D. S. Collens, Remark on remarks on Algorithm 48: Logarithm of a complex number, Comm. ACM, 7(8), 485, 1964
I have several new acknowledgements to add to those in Publication Peculiarities: Acknowledgements.
First is this thanks to the U.S. Immigration Service.
“B.J.H. would also like to thank the U.S. Immigration Service under the Bush administration, whose visa background security check forced her to spend two months (following an international conference) in a third country, free of routine obligations—it was during this time that the hypothesis presented herein was initially conjectured.”
from
Biyu He and Marcus Raichle, The fMRI Signal, Slow Cortical Potential and Consciousness, Trends in Cognitive Sciences, 13, 302-309, 2009
Paul Martin pointed out the acknowledgement
“We would like to thank Professor Patrick Browne for showing us, over a beer in McGonagall’s pub in Dundee, that a 50p coin is a set of constant width and hence the areas of the shadow projections of an obstacle do not uniquely determine the shape of an obstacle.”
in
D. Colton and B. D. Sleeman, Uniqueness Theorems for the Inverse Problem of Acoustic Scattering, IMA J. Appl. Math., 31, 253-259, 1983
Federico Poloni notes the
Unacknowledgements
This work is ostensibly supported by the the Italian Ministry of University and Research under the FIRB program, project RBIN047MH9-000. The Ministry however has not paid its dues and it is not known whether it will ever do.
in the paper
F. Chierichetti, S. Lattanzi and A. Panconesi, Rumour Spreading and Graph Conductance, 1657-1663, in Proceedings of the Twenty-first Annual {ACM–SIAM} Symposium on Discrete Algorithms, SIAM, 2010
Niall Madden pointed out
“Finally I would like to thank my daughter Lily for keeping me awake.”
in this arXiv paper.
Finally, a footnote on the first page of the paper
Andrew Hendry, Catherine Peichel, Blake Matthews, Janette Boughman and Patrik Nosil, Stickleback Research: The Now and the Next, Evolutionary Ecology Research, 15, 111-141, 2013
reads “Each author wishes the others had contributed more”.
Nick Higham 
From Bud Mishra’s Algorithmic Algebra book:
“Last but not least, I thank Dick Aynes without whose unkind help this book would have gone to press some four years ago.”
One that didn’t make it: John Forbes Nash was apparently having a discussion/thinking out loud an idea (depending who you believe) with mathematician X. At the end X said “Be sure to mention me in the paper” to which Nash responded “I’ll be sure to say X was in the room when I had the idea”.