Evolutionary chronology - if any, which species have evolved in the last 100 years
Every single species in existence has "evolved" over the past 100 years. Evolution is a constant process. You are asking whether we can observe evolutionary change in a given species over a short time span, not whether evolution is occurring. I know this sounds like pedantry but it is a very important distinction.

That said, yes, of course we've seen evolution in action in short time spans. The classic example is the various bacterial species that have developed resistance to antibiotics. As very nicely illustrated by Garry Trudeau: 

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If you want more rigorous evidence than a comic strip, have a look at Wikipedia's page on antibiotic resistance or read Demerec, 1948(1).

Another example is described by Yona et al.(2) who show that subjecting yeast to high temperatures (heat stress) for a few generations causes genetic changes that help the cells deal with the stress. This is, clearly, evolution in action. In fact, they even show that the first response is the duplication of an entire chromosome (think of it as a crude, bludgeon-like solution) which is later suppressed by other, more subtle, compensatory mechanisms which arise to replace it. 




Demerec, Milisav, "Origin of bacterial resistance to antibiotics." Journal of bacteriology 56(1), 1948
Yona et al., "Chromosomal duplication is a transient evolutionary solution to stress", PNAS, 109(51), 2012.