Holding that there is evidence of disability-based harassment when a supervisor hovers around an employee's work area, eavesdrops on her conversations, and intercepts her phone calls
Holding that a plaintiff presented evidence of "objectively severe and pervasive workplace harassment" under the ADA where the plaintiff had offered "a good deal of evidence that [his] supervisors ... in vulgar and profane language, constantly berated and harassed him and the other" workers with disabilities and that this harassment "occurred at least weekly"