I have never been hassled about cycling to work but it is a point of conversation pretty frequently (you know, when you show up 100% drenched with your helmet on and have to get your rain gear off, etc. it kind of makes a bit of a scene). Usually the conversations are pretty light and I make fun of myself. A coworker recently said "I couldn't bike to work because I would be drowning in sweat" to which I replied "see, I'm a software engineer and we're supposed to look crappy and disheveled so it's perfect for me". Joke around and keep in mind that if you're not in a heavy cycling city people are probably fascinated with your choice of transportation more than anything (it'd be like if somebody rode a horse to work or something along those lines... you'd obviously start asking them questions about it!).