Best MATLAB folks I care about -

• bsxfun, permute, reshape - Swiss army knife
• unique, histc - Dating for too long and not getting married
• diff, cumsum - Sisters that fight all the time
• setdiff, ismember, intersect - Judges
• any, all - Ninjas
• Logical Indexing - Angel

Nay loops, Yay bsxfun, FTW GPU + bsxfun.

Exciting MATLAB -

• Working with numeric data based cell arrays? For performance, unpack to numeric ASAP and keep as such ALAP: [1], [2] [3] [4]
• Sum over blocks : [1], [2], [3], [4].
• Dump meshgrid/ndgrid for bsxfun: [1] [2] [3]
• Avoid anonymous functions, even with bsxfun : [1] runtime numbers.
• Index into diagonal elements efficiently with bsxfun: [1] [2]
• Function-inline for insane speedups:[1].
• Avoid sub2ind with its raw version for a noticeable speedup! [1]
• Replace repmat with bsxfun : [1] [2] [3] [4]
• Even tic/toc need warming up before benchmarking
• Efficient euclidean distances calculation: Original source, Explanation

Insane bsxfun -

• CORR2 in multidimentional arrays
• Cluster classification based on euclidean distance